Tootfinder

#NowPlaying some SICK, grody death metal I just found that I won't even save til Thursday - MORTIFERUM. This is their first EP 'Altar of Decay' from 2017, but their 2021 full length is fantastic too.
That's up next.
https://…

First observation of the $\Lambda^0_b \to D^ D^- \Lambda$ decay
LHCb collaboration, et al.
https://arxiv.org/abs/2403.03586 https://…

First observation of the $Λ^0_b \to D^+ D^- Λ$ decay
The $Λ^0_b \to D^+ D^- Λ$ decay is observed for the first time using proton-proton collision data collected by the LHCb experiment at a center-of-mass energy of $13 \mathrm{TeV}$, corresponding to an integrated luminosity of $5.3 \mathrm{fb}^{-1}$. Using the $B^0 \to D^+ D^- K_{\mathrm{S}}^0$ decay as a reference channel, the product of the relative production cross-section and decay branching fractions is measured to be $$ {\cal R}=\frac{σ_{Λ^0_b}}{σ_{B^0}} \times \frac{{\cal B}(Λ^0_b \t…

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#OpenRC […] has been in a state of bureaucratic decay for a decade now, having all been hoarded by a random corporate contractor about as responsive to the outside universe as OpenOffice (while taking up as much space; they're the entire reason for the farcical metadata/AUTHORS file in the main package repo).
"""
#Gentoo copyright policy (AKA #GLEP76) has been a long time in the making. More specifically, as you can guess from the author list, it has been a long time in fruitless debate, followed by a short period of creative activity. In its original form, it has been unanimously approved both by the Council and the Trustees in September 2018.
https://bugs.gentoo.org/653118
Not a month later, once we've actually started requiring signoffs per the new policy, one of the Council members requested a "transitional period", to give their company's legal team more time to approve it. Like, they've actively influenced the policy, they've actually voted for approving it, but they didn't mean for it to actually apply at the time — and they've never bothered telling anyone about the problem earlier. Fortunately, they've managed to get a quick approval and started using it.
https://bugs.gentoo.org/667602
As a side effect of using it, attribution lines to said company started popping up in random ebuilds that their employees touched (malicious compliance or just corporate bullshit?). This heralded a maintenance nightmare. Two months later, metadata/AUTHORS was proposed as a compromise to stop that.
https://bugs.gentoo.org/672962
All these years later, I'm thinking that we had a simpler solution to all these, and many later problems, at our disposal back then…

Macroscopic neutrinoless double beta decay: long range quantum coherence
Gordon Baym, Jen-Chieh Peng
https://arxiv.org/abs/2403.02602 https://

Macroscopic neutrinoless double beta decay: long range quantum coherence
We introduce the concept of ``macroscopic neutrinoless double beta decay" (MDBD) for Majorana neutrinos. In this process an antineutrino produced by a nucleus undergoing beta decay, $X \to Y + e^- + \bar ν_e$, is absorbed as a neutrino by another identical $X$ nucleus via the inverse beta decay reaction, $ν_e + X \to e^-+Y$. The distinct signature of MDBD is that the total kinetic energy of the two electrons equals twice the endpoint energy of single beta decay. The amplitude for MDBD, a cohe…

Mass and decay width of $T_{ccs}$ from symmetries
Mitsuru Tanaka, Yasuhiro Yamaguchi, Masayasu Harada
https://arxiv.org/abs/2403.03548 https://

Mass and decay width of $T_{ccs}$ from symmetries
We analyze the mass and width of the doubly heavy tetraquark $T_{ccs}$ composed of a heavy diquark and a light quark cloud with strangeness with assuming that a color anti-triplet heavy diquark is a dominant component of the doubly charmed tetraquarks $T_{cc}$ and $T_{ccs}$. We construct an effective Lagrangian for masses of heavy hadrons based on the superflavor symmetry between the doubly heavy tetraquarks and the singly heavy baryons with including the terms which simultaneously break the he…

Analog-antianalog isospin mixing in $^{47}$K $\beta^-$ decay
Brian Kootte, H. Gallop, C. Luktuke, J. C. McNeil, A. Gorelov, D. G. Melconian, J. Klimo, B. M. Vargas-Calderon. J. A. Behr
https://arxiv.org/abs/2405.02742

Analog-antianalog isospin mixing in $^{47}$K $β^-$ decay
We have measured the isospin mixing of the I$^π$= 1/2$^+$ E$_x$=2.599 MeV state in nearly-doubly-magic $^{47}$Ca with the isobaric analog 1/2$^+$ state of $^{47}$K. Using the TRIUMF atom trap for $β$ decay, we have measured a nonzero asymmetry of the progeny $^{47}$Ca with respect to the initial $^{47}$K spin polarization, which together with the $β$ asymmetry implies a nonzero ratio of Fermi to Gamow-Teller matrix elements $y$= 0.098$\pm$0.037 for the $1/2^+ \rightarrow 1/2^+$ transition. I…

This https://arxiv.org/abs/2310.15660 has been replaced.
initial toot: https://mastoxiv.page/@arXiv_…

Ending the prompt phase in photospheric models of gamma-ray bursts
The early steep decay, a rapid decrease in X-ray flux as a function of time following the prompt emission, is a robust feature seen in almost all gamma-ray bursts with early enough X-ray observations. This peculiar phenomenon has often been explained as emission from high latitudes of the last flashing shell. However, in photospheric models of gamma-ray bursts, the timescale of high-latitude emission is generally short compared to the duration of the steep decay phase, and hence an alternative …

This https://arxiv.org/abs/2302.06820 has been replaced.
initial toot: https://mastoxiv.page/@arXiv_…

Quark clusters, QCD vacuum and the cosmological 7Li, Dark Matter and Dark Energy problems
We propose a non-exotic electromagnetic solution (within the standard model of particle physics) to the cosmological 7Li problem based upon a narrow 2 MeV photo-emission line from the decay of light Glueballs (LGBs). These LGBs form within color superconducting, tens of Fermi in size, quark clusters (SQCs) in the radiation-dominated post-BBN epoch. The mono-chromatic line from the LGB -> gamma+gamma decay reduces Big-Bang nucleosynthesis (BBN) 7Be by 2/3 without affecting other abundances or CM…

YAP:Ce scintillator as an absolute ultracold neutron detector
M. Krivo\v{s}, Z. Tang, N. Floyd, C. L. Morris, M. Blatnik, C. Cude-Woods, S. M. Clayton, A. T. Holley, T. M. Ito, C. -Y. Liu, M. Makela, I. F. Martinez, A. S. C. Navazo, C. M. O'Shaughnessy, E. L. Renner, R. W. Pattie, A. R. Young
https://arxiv.org/abs/2405.02309…

YAP:Ce scintillator as an absolute ultracold neutron detector
The upcoming UCNProBe experiment at Los Alamos National Laboratory will measure the $β$-decay rate of free neutrons with different systematic uncertainties than previous beam-based neutron lifetime experiments. We have developed a new $^{10}$B-coated YAP:Ce scintillator whose properties are presented. The advantage of the YAP:Ce scintillator is its high Fermi potential, which reduces the probability for upscattering of ultracold neutrons, and its short decay time, which is important at high co…

Amplitude analysis of the $\Lambda_b^0\to pK^-\gamma$ decay
LHCb collaboration, et al.
https://arxiv.org/abs/2403.03710 https://arxiv…

Amplitude analysis of the $Λ_b^0\to pK^-γ$ decay
The resonant structure of the radiative decay $Λ_b^0\to pK^-γ$ in the region of proton-kaon invariant-mass up to 2.5 GeV$/c^2$ is studied using proton-proton collision data recorded at centre-of-mass energies of 7, 8, and 13 TeV collected with the LHCb detector, corresponding to a total integrated luminosity of 9 fb$^{-1}$. Results are given in terms of fit and interference fractions between the different components contributing to this final state. Only $Λ$ resonances decaying to $pK^-$ are…

Exponential decay of solutions to linear evolution equations with time-dependent time delay
Elisa Continelli, Cristina Pignotti
https://arxiv.org/abs/2404.03467

Exponential decay of solutions to linear evolution equations with time-dependent time delay
In this note, we analyze an abstract evolution equation with time-dependent time delay and time-dependent delay feedback coefficient. We assume that the operator corresponding to the nondelayed part of the model generates an exponentially stable semigroup. Under an appropriate assumption on the delay feedback, we prove the well-posedness and an exponential stability estimate for our model. Applications of our abstract results to concrete models are also illustrated.

Mass and decay width of $T_{ccs}$ from symmetries
Mitsuru Tanaka, Yasuhiro Yamaguchi, Masayasu Harada
https://arxiv.org/abs/2403.03548 https://

Mass and decay width of $T_{ccs}$ from symmetries
We analyze the mass and width of the doubly heavy tetraquark $T_{ccs}$ composed of a heavy diquark and a light quark cloud with strangeness with assuming that a color anti-triplet heavy diquark is a dominant component of the doubly charmed tetraquarks $T_{cc}$ and $T_{ccs}$. We construct an effective Lagrangian for masses of heavy hadrons based on the superflavor symmetry between the doubly heavy tetraquarks and the singly heavy baryons with including the terms which simultaneously break the he…

This https://arxiv.org/abs/1712.10045 has been replaced.
link: https://scholar.google.com/scholar?q=a

Nonlinear stability of self-gravitating massive fields
We consider the global evolution problem for Einstein's field equations in the near-Minkowski regime and study the long-time dynamics of a massive scalar field evolving under its own gravitational field. We establish the existence of a globally hyperbolic Cauchy development associated with any initial data set that is sufficiently close to a data set in Minkowski spacetime. In addition to applying to massive fields, our theory allows us to cover metrics with slow decay in space. The strategy of…

Observation of the decay $h_{c}\to3(\pi^{ }\pi^{-})\pi^{0}$
BESIII Collaboration, et al.
https://arxiv.org/abs/2403.03500 https://arx…

Observation of the decay $h_{c}\to3(π^{+}π^{-})π^{0}$
Based on $(2712.4\pm14.1)\times10^{6}$ $ψ(3686)$ events collected with the BESIII detector, we study the decays $h_{c}\to3(π^{+}π^{-})π^{0}$, $h_{c}\to2(π^{+}π^{-})ω$, $h_{c}\to2(π^{+}π^{-})π^{0}η$, $h_{c}\to2(π^{+}π^{-})η$, and $h_{c}\to p\bar{p}$ via $ψ(3686)\toπ^{0}h_{c}$. The decay channel $h_{c}\to3(π^{+}π^{-})π^{0}$ is observed for the first time, and its branching fraction is determined to be $\left( {9.28\pm 1.14 \pm 0.77} \right) \times {10^{ - 3}}$, where the first …

Exterior stability of Minkowski spacetime with borderline decay
Dawei Shen
https://arxiv.org/abs/2405.00735 https://arxiv.org/pdf/240…

Exterior stability of Minkowski spacetime with borderline decay
In 1993, the global stability of Minkowski spacetime has been proven in the celebrated work of Christodoulou and Klainerman \cite{Ch-Kl}. In 2003, Klainerman and Nicolò \cite{Kl-Ni} revisited Minkowski stability in the exterior of an outgoing null cone. In \cite{Shen23}, the author extended the results of \cite{Ch-Kl} to minimal decay assumptions. In this paper, we prove that the exterior stability of Minkowski holds with decay which is borderline compared to the minimal decay considered in \c…

Relativistic mean-field study of alpha decay in superheavy isotopes with 100 \texorpdfstring{$\leq$ Z $\leq$}-120
Nishu Jain, M. Bhuyan, Raj Kumar
https://arxiv.org/abs/2403.02748

Relativistic mean-field study of alpha decay in superheavy isotopes with 100 \texorpdfstring{$\leq$ Z $\leq$}-120
The $α$-decay half-lives of superheavy nuclei with $100 \leq Z \leq 120$ are comprehensively analyzed using the axially deformed relativistic mean field (RMF) formalism for the NL3$^*$ parameter set. We employ RMF binding energies to determine the $α$-decay energies and make a comparison with both the available experimental data and the theoretical results obtained from the global nuclear mass model WS4. The four distinct formulae, specifically the modified scaling law Brown, modified Viola-S…

This https://arxiv.org/abs/2404.01564 has been replaced.
initial toot: https://mastoxiv.page/@arXiv_hep…

The radiative decay of scalar glueball from lattice QCD
We perform the first lattice QCD study on the radiative decay of the scalar glueball to the vector meson $ϕ$ in the quenched approximation. The calculations are carried out on three gauge ensembles with different lattice spaicings, which enable us to do the continuum extrapolation. We first revisit the radiative $J/ψ$ decay into the scalar glueball $G$ and obtain the partial decay width $Γ(J/ψ\to γG)=0.449(44)~\text{keV}$ and the branching fraction $\text{Br}(J/ψ\to γG) = 4.8(5)\times 10…

Even through the horror of death, comes the beauty of life.
2 FREE wallpapers for you to use.
Also uploaded to my Ko-fi completely uncompressed (Mastodon compresses images) for free here: https://ko-fi.com/i/ID1D5V6ZS8
Enjoy!!

Click to view on Ko-fi
Follow Be Aware on Ko-fi

This https://arxiv.org/abs/2305.17614 has been replaced.
initial toot: https://mastoxiv.page/@ar…

Velocity gradient analysis of a head-on vortex ring collision
We simulate the head-on collision between vortex rings with circulation Reynolds numbers of 4000 using an adaptive, multiresolution solver based on the lattice Green's function. The simulation fidelity is established with integral metrics representing symmetries and discretization errors. Using the velocity gradient tensor and structural features of local streamlines, we characterize the evolution of the flow with a particular focus on its transition and turbulent decay. Transition is excited b…

Intriguing aspects of light baryon resonances
K. P. Khemchandani, A. Martinez Torres, Sang-Ho Kim, Seung-il Nam, A. Hosaka, H. Nagahiro
https://arxiv.org/abs/2405.02116

Intriguing aspects of light baryon resonances
We discuss that some light baryon resonances exhibit properties which cannot be described when attributing a three-valence quark structure to them. Besides pointing out the hadron resonances which clearly require description beyond the quark model, we focus on the third $s_{11},~ N^*$ state and its decay to final states consisting of the lightest hyperon resonances which have a partial width comparable to that for the decay to $πN$. Such properties of the mentioned nucleon resonance get manife…

Nonequilibrium relaxation and odd-even effect in finite-temperature electron gases
Eric Nilsson, Ulf Gran, Johannes Hofmann
https://arxiv.org/abs/2405.03635

Nonequilibrium relaxation and odd-even effect in finite-temperature electron gases
Pauli blocking in Fermi liquids imposes strong phase-space constraints on quasiparticle lifetimes, leading to a well-known quadratic-in-temperature decay rate of quasiparticle modes at low temperatures. In two-dimensional systems, however, even longer-lived modes are predicted (dubbed "odd-parity" modes). Here, we present an efficient method to evaluate the full spectrum of relaxational eigenmodes of a Fermi liquid within kinetic theory. We employ this method to study the experimentally relevan…

Quantitative estimates: How well does the discrete Fourier transform approximate the Fourier transform on $\mathbb{R}$
Martin Ehler, Karlheinz Gr\"ochenig, Andreas Klotz
https://arxiv.org/abs/2403.03810

Quantitative estimates: How well does the discrete Fourier transform approximate the Fourier transform on $\mathbb{R}$
In order to compute the Fourier transform of a function $f$ on the real line numerically, one samples $f$ on a grid and then takes the discrete Fourier transform. We derive exact error estimates for this procedure in terms of the decay and smoothness of $f$. The analysis provides a new recipe of how to relate the number of samples, the sampling interval, and the grid size.

First determination of the angular dependence of rise and decay times of solar radio bursts using multi-spacecraft observations
Nicolina Chrysaphi, Milan Maksimovic, Eduard P. Kontar, Antonio Vecchio, Xingyao Chen, Aikaterini Pesini
https://arxiv.org/abs/2404.01497

First determination of the angular dependence of rise and decay times of solar radio bursts using multi-spacecraft observations
Radio photons interact with anisotropic density fluctuations in the heliosphere, which can alter their trajectory and influence properties deduced from observations. This is particularly evident in solar radio observations, where anisotropic scattering leads to highly-directional radio emissions. Consequently, observers at varying locations will measure different properties, including different source sizes, source positions, and intensities. However, it is not known if measurements of the deca…

Heating of Millisecond Pulsars by Magnetic Field Decay
U. Geppert
https://arxiv.org/abs/2404.03458 https://arxiv.org/pdf/2404.03458…

Heating of Millisecond Pulsars by Magnetic Field Decay
Millisecond pulsars (MSPs) are believed to be very old neutron stars (NSs) whose age may exceed significantly $10^8$ yrs. Although cooling scenarios of isolated NSs predict for that age a surface temperature $T_s\sim 10^4$ K, observations of the nearest MSP J0437-4715 indicate $T_s$ well above that value. Besides the heating of the polar cap surface by backflowing charged particles, Joule heating in the crust can contribute to the overall heat budget of MSPs. Since the dipolar field component, …

Three central limit theorems for the unbounded excursion component of a Gaussian field
Michael McAuley
https://arxiv.org/abs/2403.03033 https://

Three central limit theorems for the unbounded excursion component of a Gaussian field
For a smooth, stationary Gaussian field $f$ on Euclidean space with fast correlation decay, there is a critical level $\ell_c$ such that the excursion set $\{f\geq\ell\}$ contains a (unique) unbounded component if and only if $\ell<\ell_c$. We prove central limit theorems for the volume, surface area and Euler characteristic of this unbounded component restricted to a growing box. For planar fields, the results hold at all supercritical levels (i.e. all $\ell<\ell_c$). In higher dimensions the …

🔊 Auf radioeins läuft...
Junius Meyvant:
🎵 Color Decay
#NowPlaying #JuniusMeyvant
https://open.spotify.com/track/68Vl5AxVBDPcnf9qHGPoPb
https://juniusmeyvant.bandcamp.com/track/color-decay-2

Long ranged stress correlations in the hard sphere liquid
Niklas Grimm, Martin von Bischopinck, Andreas Zumbusch, Matthias Fuchs
https://arxiv.org/abs/2405.03497

Long ranged stress correlations in the hard sphere liquid
The smooth emergence of shear elasticity is an hallmark of the liquid to glass transition. In a liquid, viscous stresses arise from local structural rearrangements. In the solid, Eshelby has shown that stresses around an inclusion decay as a power law $r^{-D}$, where $D$ is the dimension of the system. We study glass-forming hard sphere fluids by simulation and observe the emergence of the unscreened power-law Eshelby pattern in the stress correlations of the isotropic liquid state. By a detail…

Interaction-induced nonlinear magnon transport in noncentrosymmetric ferromagnets
Kosuke Fujiwara, Takahiro Morimoto
https://arxiv.org/abs/2404.03260 https…

Interaction-induced nonlinear magnon transport in noncentrosymmetric ferromagnets
We study the effect of the magnon-magnon interaction on the nonlinear magnon transport. The magnon-magnon interaction induces nonreciprocal magnon decay when the time-reversal symmetry is broken, and leads to nonlinear thermal responses of magnons. We construct a theoretical framework to study the nonlinear thermal responses due to the nonreciprocal magnon decay by using the imaginary Dyson equation and quantum kinetic theory, which is then applied to a model of honeycomb ferromagnets with Dzya…

Measurement of $CP$ asymmetries in $B^0 \rightarrow K^0_S K^0_S K^0_S$ decays at Belle II
Belle II Collaboration, et al.
https://arxiv.org/abs/2403.02590 https://arxiv.org/pdf/2403.02590
arXiv:2403.02590v1 Announce Type: new
Abstract: We report a measurement of decay-time dependent charge-parity ($CP$) asymmetries in $B^0 \rightarrow K^0_S K^0_S K^0_S$ decays. We use $387 \times 10^6 B\bar{B}$ pairs collected at the $\Upsilon(4S)$ resonance with the Belle II detector at the SuperKEKB asymmetric-energy electron-positron collider. We reconstruct 220 signal events and extract the $CP$-violating parameters $S$ and $C$ from a fit to the distribution of the decay-time difference between the two $B$ mesons. The resulting confidence region is consistent with previous measurements in $B^0 \rightarrow K^0_S K^0_S K^0_S$ and $B^0 \rightarrow (c\bar{c})K^0$ decays, and with predictions based on the standard model.

This https://arxiv.org/abs/2401.14803 has been replaced.
initial toot: https://mastoxiv.page/@arXiv_mat…

Distortion in graphs of groups and Rapid Decay classification of 3-manifold groups
The fundamental group of a closed irreducible 3-dimensional manifold has the Rapid Decay property if and only if it is not virtually Sol. This is proved by studying distortion of length functions in graphs of groups, and the stability of the Rapid Decay property in polynomially distorted graphs of groups.

CDC guideline foolishness
"CDC Director Dr. Mandy Cohen said the agency is changing its guidance because most of the US population has some immunity against Covid and, as a result, the country is no longer seeing large waves of infections, hospitalizations and deaths from the coronavirus. ... the nation reaches a kind of steady state with the virus."
"Steady state" of decay, maybe.
Respect to Dr Eric Topol for saying the words "Long Covid" in this article.
#CDC #covid

Detailed study of the decay of $^{21}$Mg
E. A. M. Jensen, S. T. Nielsen, A. Andreyev, M. J. G. Borge, J. Cederk\"all, L. M. Fraile, H. O. U. Fynbo, L. J. Harkness-Brennan, B. Jonson, D. S. Judson, O. S. Kirsebom, R. Lic\u{a}, M. V. Lund, M. Madurga, N. Marginean, C. Mihai, R. D. Page, \'A. Perea, K. Riisager, O. Tengblad
https://

Detailed study of the decay of $^{21}$Mg
Beta-delayed proton and gamma emission in the decay of $^{21}$Mg has been measured at ISOLDE, CERN with the ISOLDE Decay Station (IDS) set-up. The existing decay scheme is updated, in particular what concerns proton transitions to excited states in $^{20}$Ne. Signatures of interference in several parts of the spectrum are used to settle spin and parity assignments to highly excited states in $^{21}$Na. The previously reported $β$p$α$ branch is confirmed. A half-life of 120.5(4) ms is extracte…

A support preserving homotopy for the de Rham complex with boundary decay estimates
Andrea N\"utzi
https://arxiv.org/abs/2404.18005 https://

A support preserving homotopy for the de Rham complex with boundary decay estimates
We study the de Rham complex of relative differential forms on compact manifolds with boundary. Chain homotopies for this complex are highly non-unique, and different homotopies can have different analytic properties, particularly near the boundary. We construct a chain homotopy that has desirable support propagation properties, and that satisfies estimates relative to weighted Sobolev norms, where the weights measure decay at the boundary. The estimates are optimal given the homogeneity proper…

Multimessenger signals from compact axion star mergers
Liina Chung-Jukko, Eugene A. Lim, David J. E. Marsh
https://arxiv.org/abs/2403.03774 https://…

Multimessenger signals from compact axion star mergers
Axion dark matter can form stable, self-gravitating, and coherent configurations known as axion stars, which are rendered unstable above a critical mass by the Chern-Simons coupling to electromagnetism. We study, using numerical relativity, the merger and subsequent decay of compact axion stars. We show that two sub-critical stars can merge, and form a more massive, excited and critical star, which survives for a finite period before rapidly decaying via electromagnetic radiation. We find a ric…

Site-Controlled Purcell-Induced Bright Single Photon Emitters in Hexagonal Boron Nitride
Mashnoon Alam Sakib, Brandon Triplett, William Harris, Naveed Hussain, Alexander Senichev, Melika Momenzadeh, Joshua Bocanegra, Ruqian Wu, Alexandra Boltasseva, Vladimir M. Shalaev, Maxim R. Shcherbakov
https://arxiv.org/abs/2405.02516

Site-Controlled Purcell-Induced Bright Single Photon Emitters in Hexagonal Boron Nitride
Single photon emitters (SPEs) hosted in hexagonal boron nitride (hBN) are essential elementary building blocks for enabling future on-chip quantum photonic technologies that operate at room temperature. However, fundamental challenges, such as managing non-radiative decay, competing incoherent processes, as well as engineering difficulties in achieving deterministic placement and scaling of the emitters, limit their full potential. In this work, we experimentally demonstrate large-area arrays o…

This https://arxiv.org/abs/2403.08179 has been replaced.
link: https://scholar.google.com/scholar?q=a

Effects of wave damping and finite perpendicular scale on three-dimensional Alfven wave parametric decay in low-beta plasmas
Shear Alfven wave parametric decay instability (PDI) provides a potential path toward significant wave dissipation and plasma heating. However, fundamental questions regarding how PDI is excited in a realistic three-dimensional (3D) open system and how critically the finite perpendicular wave scale--as found in both laboratory and space plasmas--affects the excitation remain poorly understood. Here, we present the first 3D, open-boundary, hybrid kinetic-fluid simulations of kinetic Alfven wave …

Evidence of the $h_c\to K_S^0 K^ \pi^- c.c.$ decay
BESIII Collaboration, et al.
https://arxiv.org/abs/2404.03217 https://arxiv.org/pd…

Evidence of the $h_c\to K_S^0 K^+π^-+c.c.$ decay
Based on $(2.712\pm0.014)\times10^9$ $ψ(3686)$ events collected by the BESIII collaboration, evidence of the hadronic decay $h_c\to K_S^0K^+π^-+c.c.$ is found with a significance of $4.3σ$ in the $ψ(3686)\toπ^0 h_c$ process. The branching fraction of $h_c\to K_S^0 K^+π^- +c.c.$ is measured to be $(7.3\pm0.8\pm1.8)\times10^{-4}$, where the first and second uncertainties are statistical and systematic, respectively. Combining with the exclusive decay width of $η_c\to K\bar{K}π$, our resul…

Sharp Maximal function estimates for Multilinear pseudo-differential operators of type (0,0)
Bae Jun Park, Naohito Tomita
https://arxiv.org/abs/2405.02093 …

Sharp Maximal function estimates for Multilinear pseudo-differential operators of type (0,0)
In this paper, we study sharp maximal function estimates for multilinear pseudo-differential operators. Our target is operators of type (0, 0) for which a differentiation does not make any decay of the associated symbol. Analogous results for operators of type (ρ, ρ), 0 < ρ< 1, appeared in an earlier work of the authors, but a different approach is given for ρ= 0

Q: "What would vacuum decay look like if it occurred far away and spread towards us?"
A: "If a patch of spacetime anywhere in the universe were to change state, the change would radiate from there to the rest of the universe as a sort of “shock front” that propagated at the speed of light. That means we wouldn’t see it coming. We wouldn’t see any effect from it at all, and when it washed over us, we’d simply cease to exist."
God: ARE YOU NOT ENTERTAINED?

Pulse shape discrimination in an organic scintillation phoswich detector using machine learning techniques
Yujin Lee, Jinyoung Kim, Byoung-cheol Koh, Young Soo Yoon, Chang Hyon Ha
https://arxiv.org/abs/2403.03392

Pulse shape discrimination in an organic scintillation phoswich detector using machine learning techniques
We developed machine learning algorithms for distinguishing scintillation signals from a plastic-liquid coupled detector known as a phoswich. The challenge lies in discriminating signals from organic scintillators with similar shapes and short decay times. Using a single-readout phoswich detector, we successfully identified $γ$ radiation signals from two scintillating components. Our Boosted Decision Tree algorithm demonstrated a maximum discrimination power of 3.02 $\pm$ 0.85 standard deviati…

This https://arxiv.org/abs/2401.13131 has been replaced.
initial toot: https://mastoxiv.page/@arXi…

The process of constructing new knowledge: an undergraduate laboratory exercise facilitated by a vacuum capacitor-resistor circuit
The process of constructing knowledge is typically taught to students by having them reproduce established results (e.g., homework problems). An alternative pedagogical strategy is to illustrate this process using an open problem, such as voltage decay in an RC circuit as described below. Analyzing data from this circuit in an undergraduate physics laboratory course reveals a discrepancy between the data and the exponential decay model found in textbooks. As students attempt to reconcile this d…

Pole properties of a resonance: When to subtract partial-decay widths to obtain the pole widths
J. A. Oller
https://arxiv.org/abs/2403.00135 https://

Pole properties of a resonance: When to subtract partial-decay widths to obtain the pole widths
When a resonance lies near the threshold of a heavier channel, an interesting feature can occur. The paradigmatic example employed here is the scalar isoscalar $f_0(980)$ resonance that couples to the lighter $ππ$ and heavier $K\bar{K}$ channels. It is shown that the decay width is given by the sum or subtraction of the partial decay widths depending on whether the pole lies in the Riemann sheet that is contiguous with the physical one above or below the $K\bar{K}$ threshold, respectively. Ne…

Extreme resonant eccentricity excitation of stars around merging black-hole binary
Bin Liu, Dong Lai
https://arxiv.org/abs/2403.03250 https://

Extreme resonant eccentricity excitation of stars around merging black-hole binary
We study the dynamics of a star orbiting a merging black-hole binary (BHB) in a coplanar triple configuration. During the BHB's orbital decay, the system can be driven across the apsidal precession resonance, where the apsidal precession rate of the stellar orbit matches that of the inner BHB. As a result, the system gets captured into a state of resonance advection until the merger of the BHB, leading to an extreme eccentricity growth of the stellar orbit. This resonance advection occurs when …

Quantitative estimates: How well does the discrete Fourier transform approximate the Fourier transform on $\mathbb{R}$
Martin Ehler, Karlheinz Gr\"ochenig, Andreas Klotz
https://arxiv.org/abs/2403.03810

Quantitative estimates: How well does the discrete Fourier transform approximate the Fourier transform on $\mathbb{R}$
In order to compute the Fourier transform of a function $f$ on the real line numerically, one samples $f$ on a grid and then takes the discrete Fourier transform. We derive exact error estimates for this procedure in terms of the decay and smoothness of $f$. The analysis provides a new recipe of how to relate the number of samples, the sampling interval, and the grid size.

The radiative decay of scalar glueball from lattice QCD
Jintao Zou, Long-Cheng Gui, Ying Chen, Jian Liang, Xiangyu Jiang, Wen Qin
https://arxiv.org/abs/2404.01564

The radiative decay of scalar glueball from lattice QCD
We perform the first lattice QCD study on the radiative decay of the scalar glueball to the vector meson $ϕ$ in the quenched approximation. The calculations are carried out on three gauge ensembles with different lattice spaicings, which enable us to do the continuum extrapolation. We first revisit the radiative $J/ψ$ decay into the scalar glueball $G$ and obtain the partial decay width $Γ(J/ψ\to γG)=0.449(44)~\text{keV}$ and the branching fraction $\text{Br}(J/ψ\to γG) = 4.8(5)\times 10…

Long ranged stress correlations in the hard sphere liquid
Niklas Grimm, Martin von Bischopinck, Andreas Zumbusch, Matthias Fuchs
https://arxiv.org/abs/2405.03497

Long ranged stress correlations in the hard sphere liquid
The smooth emergence of shear elasticity is an hallmark of the liquid to glass transition. In a liquid, viscous stresses arise from local structural rearrangements. In the solid, Eshelby has shown that stresses around an inclusion decay as a power law $r^{-D}$, where $D$ is the dimension of the system. We study glass-forming hard sphere fluids by simulation and observe the emergence of the unscreened power-law Eshelby pattern in the stress correlations of the isotropic liquid state. By a detail…

This https://arxiv.org/abs/2403.01675 has been replaced.
link: https://scholar.google.com/scholar?q=a

MeV gamma rays from Q-ball decay
We study the supersymmetric Q balls which decay at present and find that they create a distinctive spectrum of gamma rays at around O(10) MeV. The charge of the Q ball is lepton numbers in order for the lifetime to be as long as the present age of the universe, and the main decay products are light leptons. However, as the charge of the Q ball decreases, the decay channel into pions becomes kinematically allowed towards the end of the decay, and the pions are produced at rest. Immediately, $π^…

The Independence of Magnetic Turbulent Power Spectra to the Presence of Switchbacks in the Inner Heliosphere
Peter Tatum, David Malaspina, Alexandros Chasapis, Benjamin Short
https://arxiv.org/abs/2404.03075

The Independence of Magnetic Turbulent Power Spectra to the Presence of Switchbacks in the Inner Heliosphere
An outstanding gap in our knowledge of the solar wind is the relationship between switchbacks and solar wind turbulence. Switchbacks are large fluctuations, even reversals, of the background magnetic field embedded in the solar wind flow. It has been proposed that switchbacks may form as a product of turbulence and decay via coupling with the turbulent cascade. In this work, we examine how properties of solar wind magnetic field turbulence vary in the presence or absence of switchbacks. Specifi…

Search for the $B_s^0 \rightarrow \mu^ \mu^-\gamma$ decay
LHCb collaboration, et al.
https://arxiv.org/abs/2404.03375 https://arxiv.o…

Search for the $B_s^0 \rightarrow μ^+μ^-γ$ decay
A search for the fully reconstructed $B_s^0 \rightarrow μ^+μ^-γ$ decay is performed at the LHCb experiment using proton-proton collisions at $\sqrt{s}=13$\,TeV corresponding to an integrated luminosity of $5.4\,\mathrm{fb^{-1}}$. No significant signal is found and upper limits on the branching fraction in intervals of the dimuon mass are set \begin{align} {\cal B}(B_s^0 \rightarrow μ^+μ^-γ) < 4.2\times10^{-8},~&m(μμ)\in[2m_μ,~1.70]\,\mathrm{GeV/c^2} ,\nonumber {\cal B}(B_s^0 \rig…

Asymptotic expansions with subordinate variables for solutions of the Navier-Stokes equations
Luan Hoang
https://arxiv.org/abs/2403.03132 https://

Asymptotic expansions with subordinate variables for solutions of the Navier-Stokes equations
We study the three-dimensional Navier-Stokes equations in a periodic domain with the force decaying in time. Although the force has a certain coherent decay, as time tends to infinity, it can be too complicated for the previous theory of asymptotic expansions to be applicable. To deal with this issue, we systematically develop a new theory of asymptotic expansions containing the so-called subordinate variables which can be defined recursively. We apply it to obtain an asymptotic expansion for a…

The bright black hole X-ray binary 4U 1543-47 during 2021 outburst. A clear state transition from super-Eddington to sub-Eddington accretion revealed by Insight-HXMT
Pei Jin, Guobao Zhang, Yuexin Zhang, Mariano M\'endez, Jinlu Qu, David M. Russell, Jiancheng Wang, Shuangnan Zhang, Yi-Jung Yang, Shumei Jia, Zixu Yang, Hexin Liu
https://

The bright black hole X-ray binary 4U 1543-47 during 2021 outburst. A clear state transition from super-Eddington to sub-Eddington accretion revealed by Insight-HXMT
We present a detailed analysis of the observations with the Hard X-ray Modulation Telescope of the black hole X-ray transient 4U~1543-47 during its outburst in 2021. We find a clear state transition during the outburst decay of the source. Using previous measurements of the black-hole mass and distance to the source, the source luminosity during this transition is close to the Eddington limit. The light curves before and after the transition can be fitted by two exponential functions with short…

Symmetry restoration and vacuum decay from accretion around black holes
James Marsden, Josu C. Aurrekoetxea, Katy Clough, Pedro G. Ferreira
https://arxiv.org/abs/2403.17595

Symmetry restoration and vacuum decay from accretion around black holes
Vacuum decay and symmetry breaking play an important role in the fundamental structure of the matter and the evolution of the universe. In this work we study how the purely classical effect of accretion of fundamental fields onto black holes can lead to shells of symmetry restoration in the midst of a symmetry broken phase. We also show how it can catalyze vacuum decay, forming a bubble that expands asymptotically at the speed of light. These effects offer an alternative, purely classical mecha…

Statistical theory of the broadband two plasmon decay instability
Rusko T. Ruskov, Robert Bingham, Luis O. Silva, Max Harper, Ramy Aboushelbaya, Jason F. Myatt, Peter A. Norreys
https://arxiv.org/abs/2404.17384

Statistical theory of the broadband two plasmon decay instability
There is renewed interest in direct-drive inertial confinement fusion, following the milestone December 2022 3.15 MJ ignition result on the National Ignition Facility. A key obstacle is the control of the two plasmon decay instability. Here, recent advances in inhomogeneous turbulence theory are applied to the broadband parametric instability problem for the first time. A novel dispersion relation is derived for the two plasmon decay in a uniform plasma valid under broad-bandwidth laser fields …

This https://arxiv.org/abs/2305.04777 has been replaced.
initial toot: https://mastoxiv.page/@ar…

Reducing system dimensionality with long-range collective dipole-dipole interactions
Dimensionality plays a crucial role in long-range dipole-dipole interactions (DDIs). We demonstrate that a resonant nanophotonic structure modifies the apparent dimensionality in an interacting ensemble of emitters, as revealed by population decay dynamics. Our measurements on a dense ensemble of interacting quantum emitters in a resonant nanophotonic structure with long-range DDIs reveal an effective dimensionality reduction to $\bar{d} = 2.20 (12)$, despite the emitters being distributed in 3…

The bright black hole X-ray binary 4U 1543-47 during 2021 outburst. A clear state transition from super-Eddington to sub-Eddington accretion revealed by Insight-HXMT
Pei Jin, Guobao Zhang, Yuexin Zhang, Mariano M\'endez, Jinlu Qu, David M. Russell, Jiancheng Wang, Shuangnan Zhang, Yi-Jung Yang, Shumei Jia, Zixu Yang, Hexin Liu
https://

The bright black hole X-ray binary 4U 1543-47 during 2021 outburst. A clear state transition from super-Eddington to sub-Eddington accretion revealed by Insight-HXMT
We present a detailed analysis of the observations with the Hard X-ray Modulation Telescope of the black hole X-ray transient 4U~1543-47 during its outburst in 2021. We find a clear state transition during the outburst decay of the source. Using previous measurements of the black-hole mass and distance to the source, the source luminosity during this transition is close to the Eddington limit. The light curves before and after the transition can be fitted by two exponential functions with short…

This https://arxiv.org/abs/2111.05233 has been replaced.
link: https://scholar.google.com/scholar?q=a

Exponential decay for Constrained-degree percolation
We consider the Constrained-degree percolation model in random environment (CDPRE) on the square lattice. In this model, each vertex $v$ has an independent random constraint $κ_v$ which takes the value $j\in \{0,1,2,3\}$ with probability $ρ_j$. The dynamics is as follows: at time $t=0$ all edges are closed; each edge $e$ attempts to open at a random time $U_e\sim \mathrm{U}(0,1]$, independently of all other edges. It succeeds if at time $U_e$ both its end-vertices have degrees strictly smalle…

Exploring hadronic de-excitation via Lepton Flavor Violation
Fabiola Fortuna, Leonardo Esparza, Genaro Toledo
https://arxiv.org/abs/2405.01782 https://

Exploring hadronic de-excitation via Lepton Flavor Violation
In this work, we consider a particular case of hadronic de-excitation via lepton flavor violation (LFV). Namely, $ρ^\prime \to ρμe$ decay, described considering effective dim-5 and dim-7 operators. Using the current bounds for the couplings from direct processes, we exhibit the different features in the dilepton invariant mass distribution and the branching ratios, depending on the effective operator. The results, although heavily suppressed, show that they may be useful to impose constraint…

Measurement of the mesonic decay branch of the $\bar{K}\!N\!N$ quasi-bound state
T. Yamaga, S. Ajimura, H. Asano, G. Beer, H. Bhang, M. Bragadireanu, P. Buehler, L. Busso, M. Cargnelli, S. Choi, C. Curceanu, S. Enomoto, H. Fujioka, Y. Fujiwara, T. Fukuda, C. Guaraldo, T. Hashimoto, R. S. Hayano, T. Hiraiwa, M. Iio, M. Iliescu, K. Inoue, Y. Ishiguro, T. Ishikawa, S. Ishimoto, K. Itahashi, M. Iwai, M. Iwasaki, K. Kanno, K. Kato, Y. Kato, S. Kawasaki, P. Kienle, H. Kou, Y. Ma, J. Marton, …

Measurement of the mesonic decay branch of the $\bar{K}\!N\!N$ quasi-bound state
We conducted measurements of $K^- + {^3{\rm He}} \to π\!Y \!N + N'$ reactions using $1~{\rm GeV}/c$ $K^-$-beam, aiming to understand the broad decay width of $\bar{K} \!N \!N$ ($\approx$ twice as broad as that of $Λ(1405)$ considered to be the $\bar{K} \!N$ quasi-bound state). We successfully reproduced distributions of the $π\! Y \! N$ invariant mass and momentum transfer of $π\! Y \! N$ by employing model fitting functions for $\bar{K} \! N \! N$ formation and quasi-free $\bar{K}$ absorpt…

This https://arxiv.org/abs/2306.15897 has been replaced.
initial toot: https://mastoxiv.page/@arXiv_mat…

Global solutions and blow-up for the wave equation with variable coefficients and boundary supercritical source
In this paper, we consider the wave equation with variable coefficients and boundary damping and supercritical source terms. The goal of this work is devoted to prove the local and global existence, and classify decay rate of energy depending on the growth near zero on the damping term. Moreover, we prove the blow-up of the weak solution with positive initial energy as well as nonpositive initial energy.

This https://arxiv.org/abs/2402.07177 has been replaced.
initial toot: https://mastoxiv.page/@arXiv_…

The orbital evolution of the tidally stripped star and disk-driven stable mass transfer for QPEs in GSN 069
The origin of the quasi-periodic eruptions (QPEs) is possibly mass loss at the periastron of a body moving around the supermassive black hole (SMBH) in a high eccentric orbit. Such a tidally stripped star is expected to radiate gravitational wave thereby leading to shrinkage of the periastron distance, and thus will eventually be disrupted by the SMBH in the previous studies. This scenario predicts a gradually increasing mass transfer, contradicting the observed decay in the intensity of the QP…

Exploring scalar contributions with $K^ \to \pi^ \ell^ \ell^-$
G. D'Ambrosio, A. M. Iyer, F. Mahmoudi, S. Neshatpour
https://arxiv.org/abs/2404.03643

Exploring scalar contributions with $K^+ \to π^+ \ell^+ \ell^-$
The rare kaon decay $K^+ \to π^+ \ell^+ \ell^-$ is an interesting process that offers insights into both Standard Model physics and potential New Physics contributions. While primarily driven by vector interactions in the Standard Model, it also provides a window to explore non-standard contributions. In this letter, we analyse the potential of $K^+ \to π^+ \ell^+ \ell^-$ decays to test the limits on scalar contributions. A simple yet effective analysis using differential decay width and the …

Constraints on anomalous Higgs boson couplings from its production and decay using the WW channel in proton-proton collisions at $\sqrt{s}$ = 13 TeV
CMS Collaboration
https://arxiv.org/abs/2403.00657

Constraints on anomalous Higgs boson couplings from its production and decay using the WW channel in proton-proton collisions at $\sqrt{s}$ = 13 TeV
A study of the anomalous couplings of the Higgs boson to vector bosons, including $CP$-violation effects, has been conducted using its production and decay in the WW channel. This analysis is performed on proton-proton collision data collected with the CMS detector at the CERN LHC during 2016-2018 at a center-of-mass energy of 13 TeV, and corresponds to an integrated luminosity of 138 fb$^{-1}$. The different-flavor dilepton (e$μ$) final state is analyzed, with dedicated categories targeting g…

This https://arxiv.org/abs/2306.15897 has been replaced.
initial toot: https://mastoxiv.page/@arXiv_mat…

Global solutions and blow-up for the wave equation with variable coefficients and boundary supercritical source
In this paper, we consider the wave equation with variable coefficients and boundary damping and supercritical source terms. The goal of this work is devoted to prove the local and global existence, and classify decay rate of energy depending on the growth near zero on the damping term. Moreover, we prove the blow-up of the weak solution with positive initial energy as well as nonpositive initial energy.

This https://arxiv.org/abs/2402.07177 has been replaced.
initial toot: https://mastoxiv.page/@arXiv_…

The orbital evolution of the tidally stripped star and disk-driven stable mass transfer for QPEs in GSN 069
The origin of the quasi-periodic eruptions (QPEs) is possibly mass loss at the periastron of a body moving around the supermassive black hole (SMBH) in a high eccentric orbit. Such a tidally stripped star is expected to radiate gravitational wave thereby leading to shrinkage of the periastron distance, and thus will eventually be disrupted by the SMBH in the previous studies. This scenario predicts a gradually increasing mass transfer, contradicting the observed decay in the intensity of the QP…

This https://arxiv.org/abs/2404.09021 has been replaced.
initial toot: https://mastoxiv.page/@arXiv_hepp…

Is Doublet-Triplet Splitting Necessary?
We demonstrate that it is not necessary to substantially break the mass degeneracy between the Standard Model Higgs boson doublet and the corresponding scalar leptoquark, where these two fields comprise a single five-dimensional $SU(5)$ representation. More precisely, we show that the experimental data on partial proton decay lifetimes cannot place any meaningful bound on the mass of the scalar leptoquark, a.k.a. the color triplet, if one includes effects of higher-dimensional operators within …

Complete NLO corrections to top-quark pair production with isolated photons
Daniel Stremmer, Malgorzata Worek
https://arxiv.org/abs/2403.03796 https://

Complete NLO corrections to top-quark pair production with isolated photons
We compute for the first time the so-called complete NLO corrections to top-quark pair production with one and two isolated photons in the di-lepton top-quark decay channel. The Narrow Width Approximation is used for the modeling of unstable top quarks and $W$ bosons. Higher-order QCD and EW effects as well as photon bremsstrahlung are consistently included at all stages: in production and top-quark decays. We present results at the integrated and differential fiducial cross-section level for b…

This https://arxiv.org/abs/2304.09483 has been replaced.
initial toot: https://mastoxiv.page/@arXiv_hepe…

Search for the production of dark fermion candidates in association with heavy neutral gauge boson decaying to dimuon in proton-proton collisions at $\sqrt{s} = 8$ TeV using the CMS open data
This analysis shows a search for dark fermion particles produced in association with a heavy neutral gauge boson (Z$^{\prime}$). The studied events topology are dimuon and a large missing transverse momentum. %We considered the muonic decay of Z$^{\prime}$. The analyzed data were the Open Data collected by the CMS detector in proton-proton collisions at the LHC in 2012 and correspond to an integrated luminosity of 11.6 fb$^{-1}$ at $\sqrt{s} = $ 8 TeV. One benchmark scenario the light vector wa…

Complete NLO corrections to top-quark pair production with isolated photons
Daniel Stremmer, Malgorzata Worek
https://arxiv.org/abs/2403.03796 https://

Complete NLO corrections to top-quark pair production with isolated photons
We compute for the first time the so-called complete NLO corrections to top-quark pair production with one and two isolated photons in the di-lepton top-quark decay channel. The Narrow Width Approximation is used for the modeling of unstable top quarks and $W$ bosons. Higher-order QCD and EW effects as well as photon bremsstrahlung are consistently included at all stages: in production and top-quark decays. We present results at the integrated and differential fiducial cross-section level for b…

Excited electron production at the SPPC-based ep colliders via contact interactions
Abdullatif \c{C}al{\i}\c{s}kan
https://arxiv.org/abs/2405.01900 https:/…

Excited electron production at the SPPC-based ep colliders via contact interactions
If a linear electron accelerator is installed into the SPPC (Super Proton-Proton Collider) complex, ep collision options will be available in addition to pp collisions. We consider the production of excited electrons with spin-1/2 at the future SPPC-based electron-proton colliders with center-of-mass energies of $8.44$, $11.66$, $26.68$ and $36.88$ TeV. In the $ep\rightarrow e^{\star}X\rightarrow eγX$ signal process, excited electrons are produced by contact interactions and decay into the pho…

Proposal for PAC 52: Measurement of $\alpha_-$ for $\Lambda\rightarrow p\pi^-$
Peter Hurck, Derek I. Glazier, David G. Ireland, Ken Livingston, Farah Afzal, Annika Thiel, Yannick Wunderlich, Volker Crede, Mark M. Dalton
https://arxiv.org/abs/2405.01288

Proposal for PAC 52: Measurement of $α_-$ for $Λ\rightarrow pπ^-$
We propose to measure the weak decay constant $α_-$ for the decay $Λ\rightarrow pπ^-$ using a both circularly and linearly polarized photon beam with the GlueX spectrometer in Hall D. The measurement will take advantage of the fact that a measurement with both linear and circular photon beam polarization results in an over-constrained set of amplitudes which can be fitted to data and used to extract $α_-$ which will be left as a free parameter in the fit. We expect to determine $α_-$ with …

This https://arxiv.org/abs/2310.19031 has been replaced.
initial toot: https://mastoxiv.page/@arXiv_hepp…

Charmonium decays of beauty baryons in the perturbative QCD approach
Motivated by recent advances in experimental measurements of heavy baryon decays, the charmonium decays of single $b$-baryon are investigated systematically in the framework of perturbative QCD approach. We calculate the decay branching ratios and helicity amplitudes as well as many pertinent decay asymmetry parameters that characterize the angular decay distributions. In particular, we estimate the fragmentation fractions of $b$ quark to $b$-baryons based on the current world averages of the b…

This https://arxiv.org/abs/2402.00727 has been replaced.
link: https://scholar.google.com/scholar?q=a

95 GeV excess in a $CP$-violating $μ$-from-$ν$ SSM
The CMS and ATLAS have recently reported their results searching for light Higgs boson with mass around 95 GeV, based on the full Run 2 data set. In the framework of the CP-violating (CPV) $μν$SSM, we discuss a $\sim$ 2.9$σ$ (local) excess at 95 GeV in the light Higgs boson search in the diphoton decay mode as reported by ATLAS and CMS, together with a $\sim$ 2$σ$ excess (local) in the $b\bar{b}$ final state at LEP in the same mass range. By introducing CPV phases as well as by mixing CP-ev…

This https://arxiv.org/abs/2402.00727 has been replaced.
link: https://scholar.google.com/scholar?q=a

95 GeV excess in a $CP$-violating $μ$-from-$ν$ SSM
The CMS and ATLAS have recently reported their results searching for light Higgs boson with mass around 95 GeV, based on the full Run 2 data set. In the framework of the CP-violating (CPV) $μν$SSM, we discuss a $\sim$ 2.9$σ$ (local) excess at 95 GeV in the light Higgs boson search in the diphoton decay mode as reported by ATLAS and CMS, together with a $\sim$ 2$σ$ excess (local) in the $b\bar{b}$ final state at LEP in the same mass range. By introducing CPV phases as well as by mixing CP-ev…

This https://arxiv.org/abs/2309.05760 has been replaced.
initial toot: https://mastoxiv.page/@arXiv_hepe…

Observation of $D^{+}\to K_{S}^{0}a_{0}(980)^{+}$ in the amplitude analysis of $D^{+} \to K_{S}^{0}π^+η$
We perform for the first time an amplitude analysis of the decay $D^{+}\to K_{S}^{0}π^+η$ and report the observation of the decay $D^{+}\to K_{S}^{0}a_{0}(980)^{+}$ using 2.93 fb$^{-1}$ of $e^+e^-$ collision data taken at a center-of-mass energy of 3.773 GeV with the BESIII detector. As the only W-annihilation free decay among $D$ to $a_{0}(980)$-pseudoscalar, $D^{+}\to K_{S}^{0}a_{0}(980)^{+}$ is the ideal decay to extract the contributions of the external and internal $W$-emission amplitude…

This https://arxiv.org/abs/2312.01908 has been replaced.
initial toot: https://mastoxiv.page/@arXiv_hepp…

Triply heavy tetraquark states: masses and other properties
In this work, we study masses and other static properties of triply heavy tetraquarks in the unified framework of the MIT bag which incorporates chromomagnetic interactions and enhanced binding energy. The masses, magnetic moments and charge radii of all strange and nonstrange (ground) states of triply heavy tetraquarks are computed, suggesting that all of triply heavy tetraquarks are above the respective two-meson thresholds. We also estimate relative decay widths of main decay channels of two…

How these characterized higher charmonia shape the puzzling data of the $e^ e^-\to \eta J/\psi$ cross section
Tian-Cai Peng, Zi-Yue Bai, Jun-Zhang Wang, Xiang Liu
https://arxiv.org/abs/2403.03705

How these characterized higher charmonia shape the puzzling data of the $e^+e^-\to ηJ/ψ$ cross section
Recently, the BESIII Collaboration performed a precise measurement of the $e^+e^-\to ηJ/ψ$ cross section. It is puzzling that the resonance parameters of the reported $Y(4230)$ show a substantial divergence from the previously measured results in both the open-charmed and hidden-charmed decay channels, and the line shape asymmetry of the data approaching 4.2 GeV also suggests that it might be difficult to characterize the details of the structure around 4.2 GeV by a single resonance. This has…

This https://arxiv.org/abs/2312.12987 has been replaced.
initial toot: https://mastoxiv.page/@arXiv_hepe…

Study of $B_c^+ \rightarrow χ_c π^+$ decays
A study of $B_c^+ \rightarrow χ_c π^+$ decays is reported using proton-proton collision data, collected with the LHCb detector at centre-of-mass energies of 7, 8, and 13 TeV, corresponding to an integrated luminosity of 9fb$^{-1}$. The decay $B_c^+ \rightarrow χ_{c2} π^+$ is observed for the first time, with a significance exceeding seven standard deviations. The relative branching fraction with respect to the $B_c^+ \rightarrow J/ψπ^+$ decay is measured to be $$ \frac{\mathcal{B}_{B_c^+ …

How these characterized higher charmonia shape the puzzling data of the $e^ e^-\to \eta J/\psi$ cross section
Tian-Cai Peng, Zi-Yue Bai, Jun-Zhang Wang, Xiang Liu
https://arxiv.org/abs/2403.03705

How these characterized higher charmonia shape the puzzling data of the $e^+e^-\to ηJ/ψ$ cross section
Recently, the BESIII Collaboration performed a precise measurement of the $e^+e^-\to ηJ/ψ$ cross section. It is puzzling that the resonance parameters of the reported $Y(4230)$ show a substantial divergence from the previously measured results in both the open-charmed and hidden-charmed decay channels, and the line shape asymmetry of the data approaching 4.2 GeV also suggests that it might be difficult to characterize the details of the structure around 4.2 GeV by a single resonance. This has…

This https://arxiv.org/abs/2312.12987 has been replaced.
initial toot: https://mastoxiv.page/@arXiv_hepe…

Study of $B_c^+ \rightarrow χ_c π^+$ decays
A study of $B_c^+ \rightarrow χ_c π^+$ decays is reported using proton-proton collision data, collected with the LHCb detector at centre-of-mass energies of 7, 8, and 13 TeV, corresponding to an integrated luminosity of 9fb$^{-1}$. The decay $B_c^+ \rightarrow χ_{c2} π^+$ is observed for the first time, with a significance exceeding seven standard deviations. The relative branching fraction with respect to the $B_c^+ \rightarrow J/ψπ^+$ decay is measured to be $$ \frac{\mathcal{B}_{B_c^+ …

This https://arxiv.org/abs/2309.00086 has been replaced.
initial toot: https://mastoxiv.page/@arXiv_hepp…

Anomalous interactions between mesons with nonzero spin and glueballs
Topologically nontrivial fluctuations control the anomalous interactions for the $η$ and and $η\prime$ pseudoscalar mesons. We consider the anomalous interactions for mesons with higher spin, the heterochiral nonets with $J^{P C} = 1^{+ -}$ and $2^{- +}$. Under the approximation of a dilute gas of instantons, the mixing angle between non-strange and strange mesons decreases strongly as $J$ increases, and oscillates in sign. Anomalous interactions also open up new, rare decay channels. For glu…

This https://arxiv.org/abs/2309.00086 has been replaced.
initial toot: https://mastoxiv.page/@arXiv_hepp…

Anomalous interactions between mesons with nonzero spin and glueballs
Topologically nontrivial fluctuations control the anomalous interactions for the $η$ and and $η\prime$ pseudoscalar mesons. We consider the anomalous interactions for mesons with higher spin, the heterochiral nonets with $J^{P C} = 1^{+ -}$ and $2^{- +}$. Under the approximation of a dilute gas of instantons, the mixing angle between non-strange and strange mesons decreases strongly as $J$ increases, and oscillates in sign. Anomalous interactions also open up new, rare decay channels. For glu…

Observation of the $\Xi^-_\mathrm{b}$ $\to$ $\psi$(2S)$\Xi^-$ decay and studies of the $\Xi_\mathrm{b}^{\ast{}0}$ baryon in proton-proton collisions at $\sqrt{s}$ = 13 TeV
CMS Collaboration
https://arxiv.org/abs/2402.17738

Observation of the $Ξ^-_\mathrm{b}$ $\to$ $ψ$(2S)$Ξ^-$ decay and studies of the $Ξ_\mathrm{b}^{\ast{}0}$ baryon in proton-proton collisions at $\sqrt{s}$ = 13 TeV
The first observation of the decay $Ξ^-_\mathrm{b}$ $\to$ $ψ$(2S)$Ξ^-$ and measurement of the branching ratio of $Ξ^-_\mathrm{b}$ $\to$ $ψ$(2S)$Ξ^-$ to $Ξ^-_\mathrm{b}$ $\to$ J/$ψ$$Ξ^-$ are presented. The J/$ψ$ and $ψ$(2S) mesons are reconstructed using their dimuon decay modes. The results are based on proton-proton colliding beam data from the LHC collected by the CMS experiment at $\sqrt{s}$ = 13 TeV in 2016-2018, corresponding to an integrated luminosity of 140 fb$^{-1}$. The bra…

The resonance effect for the CP asymmetry associated with the process $\omega \rightarrow \pi^{ }\pi^{-}\pi^{0}$
Xi-Liang Yuan, Gang L\"u
https://arxiv.org/abs/2404.01665

The resonance effect for the CP asymmetry associated with the process $ω\rightarrow π^{+}π^{-}π^{0}$
The direct CP asymmetry in the weak decay process of hadrons is commonly attributed to the weak phase of the CKM matrix and the indeterminate strong phase. We propose a way of creating a strong phase difference between two decay paths involving vector mesons $V= ω,ρ$ decaying to $π^{+}π^{-}π^{0}$ considering the G-parity suppressed decay process $ρ^{0} \rightarrow π^{+}π^{-}π^{0} $. It can lead to a significant CP asymmetry in the interference region. We consider the effects of $ω$ an…

Search of CP violation in baryons with the LHCb detector
Chiara Mancuso
https://arxiv.org/abs/2404.01793 https://arxiv.org/pdf/2404.0…

Search of CP violation in baryons with the LHCb detector
The latest results from the LHCb collaboration for the search for $CP$ violation in $b$-baryon decays are reported here. The first article presented is the search conducted in the $Λ_b^0 \rightarrow p π^- π^+ π^- $ decay, and the subsequent observation of $P$ violation. The following paper describes the search and the first observation of the $Λ_b^0 \rightarrow D^0 p K^-$ decay, with $D^0 \rightarrow K π$, Cabibbo-favoured and doubly suppressed mode. This proceeding concludes with the fir…

This https://arxiv.org/abs/2311.12556 has been replaced.
initial toot: https://mastoxiv.page/@arXiv_hepp…

Probing light quark Yukawa couplings through angularity distributions in Higgs boson decay
We propose to utilize angularity distributions in Higgs boson decay to probe light quark Yukawa couplings at $e^+e^-$ colliders. Angularities $τ_a$ are a class of 2-jet event shapes with variable and tunable sensitivity to the distribution of radiation in hadronic jets in the final state. Using soft-collinear effective theory (SCET), we present a prediction of angularity distributions from Higgs decaying to quark and gluon states at $e^+e^-$ colliders to ${\rm NNLL}+\mathcal{O}(α_s)$ accuracy…

This https://arxiv.org/abs/2307.12852 has been replaced.
initial toot: https://mastoxiv.page/@arXiv_hepe…

Observation of $D^+_s\to η^\prime μ^+ν_μ$, Precision Test of Lepton Flavor Universality with $D^+_s\to η^{(\prime)} \ell^+ν_\ell$, and First Measurements of $D^+_s\to η^{(\prime)}μ^+ν_μ$ Decay Dynamics
By analyzing 7.33 fb$^{-1}$ of $e^+e^-$ annihilation data collected at center-of-mass energies between 4.128 and 4.226 GeV with the BESIII detector, we report the observation of the semileptonic decay $D^+_s\to η^\prime μ^+ν_μ$, with a statistical significance larger than 10$σ$, and the measurements of the $D_s^+ \to ημ^+ν_μ$ and $D_s^+ \to η^\primeμ^+ν_μ$ decay dynamics for the first time. The branching fractions of $D_s^+ \to ημ^+ν_μ$ and $D_s^+ \to η^\primeμ^+ν_μ$ are de…

Search for the Z boson decay to $\tau\tau\mu\mu$ in proton-proton collisions at $\sqrt{s}$ = 13 TeV
CMS Collaboration
https://arxiv.org/abs/2404.18298 http…

Search for the Z boson decay to $ττμμ$ in proton-proton collisions at $\sqrt{s}$ = 13 TeV
The first search for the Z boson decay to $ττμμ$ at the CERN LHC is presented, based on data collected by the CMS experiment at the LHC in proton-proton collisions at a center-of-mass energy of 13 TeV and corresponding to an integrated luminosity of 138 fb$^{-1}$. The data are compatible with the predicted background. For the first time, an upper limit at the 95% confidence level of 6.9 times the standard model expectation is placed on the ratio of the Z $\to$ $ττμμ$ to Z $\to$ 4$μ$ br…

Semi-leptonic $W$ decay to $B$ meson with lepton pairs in HQET factorization upto $\mathcal{O}(\alpha_s)$
Saadi Ishaq, Sajawal Zafar, Abdur Rehman, Ishtiaq Ahmed
https://arxiv.org/abs/2404.01696

Semi-leptonic $W$ decay to $B$ meson with lepton pairs in HQET factorization upto $\mathcal{O}(α_s)$
Motivated by the study of heavy-light meson production within the framework of heavy quark effective theory (HQET) factorization, we extend the factorization formalism for rather a complicated process $W^+\to B^+\ell^+\ell^-$ in the limit of non-zero invariant squared-mass of dilepton, $q^2$, at the lowest order in $1/m_b$ up to $\mathcal{O}(α_s)$. The purpose of the current study is to extend the HQET factorization formula for the $W^+\to B^+\ell^+\ell^-$ process and subsequently compute the …

Search for baryon number violation in top quark production and decay using proton-proton collisions at $\sqrt{s}$ = 13 TeV
CMS Collaboration
https://arxiv.org/abs/2402.18461

Search for baryon number violation in top quark production and decay using proton-proton collisions at $\sqrt{s}$ = 13 TeV
A search is presented for baryon number violating interactions in top quark production and decay. The analysis uses data from proton-proton collisions at a center-of-mass energy of 13 TeV, collected with the CMS detector at the LHC with an integrated luminosity of 138 fb$^{-1}$. Candidate events are selected by requiring two oppositely-charged leptons (electrons or muons) and exactly one jet identified as originating from a bottom quark. Multivariate discriminants are used to separate the signa…

Recent Neutrino Parameters Impact on the Effective Majorana Neutrino Mass in 0$\nu\beta\beta$ Decay
Dongming Mei, Kunming Dong, Austin Warren, Sanjay Bhattarai
https://arxiv.org/abs/2404.19624 https://arxiv.org/pdf/2404.19624
arXiv:2404.19624v1 Announce Type: new
Abstract: We investigate how recent updates to neutrino oscillation parameters and the sum of neutrino masses influence the sensitivity of neutrinoless double-beta (0$\nu\beta\beta$) decay experiments. Incorporating the latest cosmological constraints on the sum of neutrino masses and laboratory measurements on oscillations, we determine the sum of neutrino masses for both the normal hierarchy (NH) and the inverted hierarchy (IH). Our analysis reveals a narrow range for the sum of neutrino masses, approximately 0.06 eV/c$^2$ for NH and 0.102 eV/c$^2$ for IH. Utilizing these constraints, we calculate the effective Majorana masses for both NH and IH scenarios, establishing the corresponding allowed regions. Importantly, we find that the minimum neutrino mass is non-zero, as constrained by the current oscillation parameters. Additionally, we estimate the half-life of 0$\nu\beta\beta$ decay using these effective Majorana masses for both NH and IH. Our results suggest that upcoming ton-scale experiments will comprehensively explore the IH scenario, while 100-ton-scale experiments will effectively probe the parameter space for the NH scenario, provided the background index can achieve 1 event/kton-year in the region of interest.

A Novel Proton Decay Signature at DUNE, JUNO, and Hyper-K
Florian Domingo, Herbi K. Dreiner, Dominik K\"ohler, Saurabh Nangia, Apoorva Shah
https://arxiv.org/abs/2403.18502 <…

A Novel Proton Decay Signature at DUNE, JUNO, and Hyper-K
Proton decay, although unobserved so far, is a natural expectation when attempting to explain the baryon asymmetry of the universe. $p\to K^+\barν$ or $p\to K^+\tildeχ_1^0$, with $\tildeχ_1^0$ a light exotic neutral particle, represent possible decay channels achievable in models of physics beyond the Standard Model, such as the MSSM with trilinear R-parity-violating terms, or the Standard Model extended by a heavy neutral lepton. Among the decay products of these modes, the neutral fermions…

ToMCCA: A Toy Monte Carlo Coalescence Afterburner
Maximilian Mahlein, Chiara Pinto, Laura Fabbietti
https://arxiv.org/abs/2404.03352 https://

ToMCCA: A Toy Monte Carlo Coalescence Afterburner
The study of antinuclei in cosmic rays provides a unique opportunity to probe physics beyond the Standard Model. Antinuclei in our Galaxy may stem either from annihilation or decay of dark matter, or from collisions of cosmic rays with the interstellar medium, which constitute the background of indirect dark matter searches. Understanding the formation mechanism of (anti)nuclei is crucial for setting limits on their production in space. Coalescence models, which describe the formation of light …

This https://arxiv.org/abs/2312.17114 has been replaced.
initial toot: https://mastoxiv.page/@arXiv_hepp…

Study of angular observables in exclusive $B_c$ decays
In this paper, we focus on the angular observables such as longitudinal polarization, $τ$-polarization, and forward-backward asymmetry including the study of the lepton flavor violating observables. Our investigation is conducted within the Relativistic Independent Quark Model, emphasizing the potential model-dependent analysis of these observables in the decay channels $B_c \rightarrow η_c(J/ψ)/D (D^*), l ν_l$ in the entire $q^2$ region. Considering the experimental aspects of $B$-hadron d…

Deformation-induced CPT violation in entangled pairs of neutral kaons
Andrea Bevilacqua, Jerzy Kowalski-Glikman, Wojciech Wislicki
https://arxiv.org/abs/2404.03600

Deformation-induced CPT violation in entangled pairs of neutral kaons
In this paper we consider description of kaon -- anti-kaon interference in the context of a theory with deformed $\cal CPT$ symmetry. In the case of such theoretical models, deviations from the standard $\cal CPT$ invariance is related to the momentum carried by the particles; in particular the rest masses of particles and antiparticles are equal. We find that the decay intensity of kaon -- anti-kaon pair has three contributing terms: the correct-parity, the wrong-parity, and the interference b…

This https://arxiv.org/abs/2401.16907 has been replaced.
initial toot: https://mastoxiv.page/@arXiv_hepp…

Gauge and Scalar Boson Mediated Proton Decay in a Predictive SU(5) GUT Model
We assess proton decay signatures in the simplest viable $SU(5)$ model with regard to constraints on parameters governing the Standard Model fermion mass spectrum. Experimental signals for all eight two-body proton decay processes result from exchange of two gauge bosons, a single scalar leptoquark, or their combination. Consequently, it enables us to delve into an in-depth anatomy of proton decay modes and anticipate future signatures. Our findings dictate that observing a proton decay into $p…

Most general neutron decay correlations: Standard Model recoil and radiative corrections
Chien-Yeah Seng
https://arxiv.org/abs/2404.17200 https://

Most general neutron decay correlations: Standard Model recoil and radiative corrections
To continue from our previous work \textit{Phys.Rev.D\textbf{109}(2024),073007}, we derive the full Standard Model prediction of the most general free neutron differential decay rate with all massive particles (neutron, proton and electron) polarized, including the $\mathcal{O}(1/m_N)$ recoil corrections and $\mathcal{O}(α/π)$ radiative corrections. For the latter we adopt the newly-developed pseudo-neutrino formalism which is compatible to realistic experimental setups, in which neutrinos an…

Most general neutron decay correlations: Standard Model recoil and radiative corrections
Chien-Yeah Seng
https://arxiv.org/abs/2404.17200 https://

Most general neutron decay correlations: Standard Model recoil and radiative corrections
To continue from our previous work \textit{Phys.Rev.D\textbf{109}(2024),073007}, we derive the full Standard Model prediction of the most general free neutron differential decay rate with all massive particles (neutron, proton and electron) polarized, including the $\mathcal{O}(1/m_N)$ recoil corrections and $\mathcal{O}(α/π)$ radiative corrections. For the latter we adopt the newly-developed pseudo-neutrino formalism which is compatible to realistic experimental setups, in which neutrinos an…

Prospects for PIONEER
Martin Hoferichter
https://arxiv.org/abs/2403.18889 https://arxiv.org/pdf/2403.18889

Prospects for PIONEER
Pion $β$ decay, $π^+ \toπ^0 e^+ ν_e$, offers a pristine way to measure the CKM matrix element $V_{ud}$ in a purely mesonic system, with excellent control over the hadronic matrix elements. We review the physics goals and current status of the PIONEER experiment, which aims at major improvements in the branching fractions for the $π^+\to e^+ ν_e$ decay in Phase I and for pion $β$ decay in Phases II and III of its experimental program, potentially leading to a measurement of $V_{ud}$ compe…

The Width of an Electron-Capture Neutrino Wave Packet
B. J. P. Jones, E Marzec, J. Spitz
https://arxiv.org/abs/2404.19746 https://arxiv.org/pdf/2404.19746
arXiv:2404.19746v1 Announce Type: new
Abstract: We expand on the methodology outlined in previous work that predicted the width of an antineutrino wave packet emerging from a beta-decaying nucleus, to the case of a neutrino from electron capture decay. Based on this result, we also respond to a recent Beryllium Electron capture in Superconducting Tunnel junctions Experiment (BeEST) paper which utilizes this previous work in forming their measurement of the neutrino wave packet width. According to our interpretation, the direct limit on the neutrino wave packet width from electron capture decay ($e^- \mathrm{^{7}Be}\rightarrow\mathrm{^{7}Li \nu_e}$) using the BeEST analysis should map to $\sigma_{\nu,x}>6.2\,\mathrm{pm}$ while our theoretical prediction is $\sigma_{\nu,x}\sim2.7\,\mathrm{nm}$.

This https://arxiv.org/abs/2310.17070 has been replaced.
initial toot: https://mastoxiv.page/@arXiv_hepp…

Effective field theory of particle mixing
We introduce an effective field theory to study \emph{indirect} mixing of two fields induced by their couplings to a common decay channel in a medium. The extension of the method of Lee, Oehme and Yang, the cornerstone of analysis of CP violation in flavored mesons, to include mixing of particles with different masses provides a guide to and benchmark for the effective field theory. The analysis reveals subtle caveats in the description of mixing in terms of the widely used non-Hermitian effect…