Tootfinder

Probing lepton flavor violating dark matter scenarios via astrophysical photons and positrons
Jin-Han Liang, Yi Liao, Xiao-Dong Ma
https://arxiv.org/abs/2508.05121 https://

Probing lepton flavor violating dark matter scenarios via astrophysical photons and positrons
In this Letter we explore, for the first time, the constraints on lepton flavor violating (LFV) dark matter (DM) scenarios via the astrophysical photons and positrons, including both the annihilation and decay modes, ${\tt DM(+DM)}\to e^\pm μ^\mp, e^\pm τ^\mp, μ^\pm τ^\mp$. Given the presence of LFV interactions in various DM models and the challenge of probing such interactions at terrestrial facilities, such as DM direct detection and collider experiments, indirect detection offers a uniq…

The ILD Detector: A Versatile Detector for an Electron-Positron Collider at Energies up to 1 TeV
H. Abramowicz, D. Ahmadi, J. Alcaraz, O. Alonso, L. Andricek, J. Anguiano, O. Arquero, F. Arteche, D. Attie, O. Bach, M. Basso, J. Baudot, A. Bean, T. Behnke, A. Bellerive, Y. Benhammou, M. Berggren, G. Bertolone, M. Besancon, A. Besson, O. Bezshyyko, G. Blazey, B. Bliewert, J. Bonis, R. Bosley, V. Boudry, C. Bourgeois, I. Bozovic Jelisavcic, D. Breton, J. -C. Brient, B. Brudnowski, V. Bues…

The ILD Detector: A Versatile Detector for an Electron-Positron Collider at Energies up to 1 TeV
The International Large Detector, ILD, is a detector concept for an experiment at a future high energy lepton collider. The detector has been optimised for precision physics in a range of energies from 90~GeV to about 1~TeV. ILD features a high precision, large volume combined silicon and gaseous tracking system, together with a high granularity calorimeter, all inside a central solenoidal magnetic field. The paradigm of particle flow has been the guiding principle of the design of ILD. ILD is …

Measurements and interpretations of $W^{\pm}Z$ production cross-sections in $pp$ collisions at $\sqrt{s} =$ 13 TeV with the ATLAS detector
ATLAS Collaboration
https://arxiv.org/abs/2507.03500

Measurements and interpretations of $W^{\pm}Z$ production cross-sections in $pp$ collisions at $\sqrt{s} =$ 13 TeV with the ATLAS detector
Measurements of integrated and differential cross-sections for $W^{\pm}Z$ production in proton-proton collisions are presented. The data collected by the ATLAS detector at the Large Hadron Collider from 2015 to 2018 at a centre-of-mass energy of $\sqrt{s} =$ 13 TeV are used, corresponding to an integrated luminosity of 140 fb$^{-1}$. The $W^{\pm}Z$ candidate events are reconstructed using leptonic decay modes of the gauge bosons into electrons or muons. The integrated cross-section per lepton f…

Investigating the leptonic couplings of doubly charged scalars at the muon collider
Nivedita Ghosh, Santosh Kumar Rai, Tousik Samui, Agnivo Sarkar
https://arxiv.org/abs/2506.00966

Investigating the leptonic couplings of doubly charged scalars at the muon collider
We study the lepton flavour conserving and violating couplings of a doubly charged scalar at a 3 TeV muon collider. Using a model independent Lagrangian, we analyse the electron electron, muon muon, and tau tau final states mediated by the doubly charged scalar to probe individual couplings to mu e, mu mu, and mu tau. We find that for a doubly charged scalar of mass greater than 1 TeV and order one couplings, we achieve high signal significance in these channels. We delineate the collider s sen…

Leptophilic dark matter in $U(1)_{L_{i}-L_{j}}$ models: a solution to the Fermi-LAT Galactic Center Excess consistent with cosmological and laboratory observations
Jordan Koechler, Mattia Di Mauro
https://arxiv.org/abs/2508.02775

Leptophilic dark matter in $U(1)_{L_{i}-L_{j}}$ models: a solution to the Fermi-LAT Galactic Center Excess consistent with cosmological and laboratory observations
The particle origin of dark matter (DM) remains elusive despite decades of direct, indirect, and collider searches. Several groups have reported a $γ$-ray excess toward the Galactic Centre, commonly referred to as the Galactic Centre Excess (GCE). Its spectrum is consistent with annihilation of weakly interacting massive particles (WIMPs) of mass $\mathcal{O}(10-100)$ GeV and a thermal-relic cross section. Although many concrete WIMP models reproduce the GCE spectrum, most are now excluded by …

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Test of lepton flavour universality in $W$-boson decays into electrons and $Ï„$-leptons using $pp$ collisions at $\sqrt{s}=13$ TeV with the ATLAS detector
A measurement of the ratio of the branching fractions, $R_{τ/e} = B(W \to τν)/ B(W \to e ν)$, is performed using a sample of $W$ bosons originating from top-quark decays to final states containing $τ$-leptons or electrons. This measurement uses $pp$ collisions at $\sqrt{s}=13$ TeV, collected by the ATLAS experiment at the Large Hadron Collider during Run 2, corresponding to an integrated luminosity of 140 fb$^{-1}$. The $W \to τν_τ$ (with $τ\to e ν_e ν_τ$) and $W \to e ν_e$ decays …

$\gamma, J/\psi$ production through ISR process in electron-positron annihilation at B-factories
Shashank Bhatnagar
https://arxiv.org/abs/2508.03212 https://

$γ, J/ψ$ production through ISR process in electron-positron annihilation at B-factories
We study the Initial state radiation (ISR) process, $e^- e^+ \rightarrow^*γ\rightarrow γ+J/ψ$ observed at high luminosity $e^- e^+$ colliders such as B-factories, with the ISR photon being emitted through the initial electron or positron, prior to their annihilation. The emitted $J/Ψ$ is produced through the photon fragmentation process, with the produced $J/ψ$ in turn decaying into a pair of leptons, $μ^-+μ^+$ through the leptonic decay process, $J/Ψ\rightarrow γ^*\rightarrow γμ^- Î…

Prospects of searches for invisible $B$-meson decays at FCC-ee
P. Alvarez Cartelle, M. Kenzie, R. Mangrulkar, A. R. Wiederhold, E. Wood
https://arxiv.org/abs/2508.04471 https://…

Prospects of searches for invisible $B$-meson decays at FCC-ee
We investigate the physics reach and potential for the study of $B$-meson decays to invisible final states at the Future Circular Collider running electron-positron collisions at the $Z$-pole (FCC-ee). Signal and background candidates, which involve inclusive contributions from $Z$ decays to leptons or quarks are simulated for a proposed multi-purpose detector. Signal candidates are selected by a mixture of rectangular cuts and a multiclass Boosted Decision Tree classifier. We determine that …

Bounds reach of a future circular collider on the parameters of a minimal Baryon-Lepton symmetric model
Marlon P. Brade, Jeremiah D. Juevesano, Dennis C. Arogancia, Jan Mickelle V. Maratas
https://arxiv.org/abs/2507.19828

Bounds reach of a future circular collider on the parameters of a minimal Baryon-Lepton symmetric model
This paper investigates the physics potential of the proton-proton Future Circular Collider (FCC-hh) in the search for a new heavy gauge boson, Z', within the framework of the minimal Baryon-Lepton (B-L) symmetric model. We examine the exclusion limits on the mass of the Z' boson for various sets of coupling constants, utilizing leptonic decays, specifically into charged lepton pairs (electron and muon). Using the DARKCAST framework, we compare the parameter constraints derived from previous ex…

Observation of $t\bar{t}\gamma\gamma$ production at $\sqrt{s}=$13 TeV with the ATLAS detector
ATLAS Collaboration
https://arxiv.org/abs/2506.05018 https://…

Observation of $t\bar{t}γγ$ production at $\sqrt{s}=$13 TeV with the ATLAS detector
This paper presents the first observation of top-quark pair production in association with two photons ($t\bar{t}γγ$). The measurement is performed in the single-lepton decay channel using proton-proton collision data collected by the ATLAS detector at the Large Hadron Collider. The data correspond to an integrated luminosity of 140 fb$^{-1}$ recorded during Run 2 at a centre-of-mass energy of 13 TeV. The $t\bar{t}γγ$ production cross section, measured in a fiducial phase space based on par…