Tootfinder

New constraints on $Z^\prime$ from captured dark matter annihilation in astrophysical objects
Basabendu Barman, Pooja Bhattacharjee, Arindam Das
https://arxiv.org/abs/2509.12192

New constraints on $Z^\prime$ from captured dark matter annihilation in astrophysical objects
Considering dark matter capture in astrophysical objects such as neutron stars and brown dwarfs, followed by their annihilation into two neutrino and four neutrino final states, we derive new constraints on the mass and coupling of a novel abelian gauge boson $Z^\prime$ arising from an anomaly-free $U(1)$ extension of the Standard Model. We further confront these astrophysical limits with complementary bounds from the Planck-observed relic abundance via the freeze-in mechanism, big bang nucleos…

DeepMET: Improving missing transverse momentum estimation with a deep neural network
CMS Collaboration
https://arxiv.org/abs/2509.12012 https://arxiv.org/p…

DeepMET: Improving missing transverse momentum estimation with a deep neural network
At hadron colliders, the net transverse momentum of particles that do not interact with the detector (missing transverse momentum, $\vec{p}_\mathrm{T}^\text{miss}$) is a crucial observable in many analyses. In the standard model, $\vec{p}_\mathrm{T}^\text{miss}$ originates from neutrinos. Many beyond-the-standard-model particles, such as dark matter candidates, are also expected to leave the experimental apparatus undetected. This paper presents a novel $\vec{p}_\mathrm{T}^\text{miss}$ estimato…

Tracer: A Forensic Framework for Detecting Fraudulent Speedruns from Game Replays
Jaeung Franciskus Yoo, Huy Kang Kim
https://arxiv.org/abs/2509.10848 https://

Tracer: A Forensic Framework for Detecting Fraudulent Speedruns from Game Replays
Speedrun, a practice of completing a game as quickly as possible, has fostered vibrant communities driven by creativity, competition, and mastery of game mechanics and motor skills. However, this contest also attracts malicious actors as financial incentives come into play. As media and software manipulation techniques advance - such as spliced footage, modified game software and live stream with staged setups - forged speedruns have become increasingly difficult to detect. Volunteer-driven com…

Perception of Brain-Computer Interface Implantation Surgery for Motor, Sensory, and Autonomic Restoration in Spinal Cord Injury and Stroke
Derrick Lin, Tracie Tran, Shravan Thaploo, Jose Gabrielle E. Matias, Joy E. Pixley, Zoran Nenadic, An H. Do
https://arxiv.org/abs/2507.11572

Perception of Brain-Computer Interface Implantation Surgery for Motor, Sensory, and Autonomic Restoration in Spinal Cord Injury and Stroke
(Abridged) Stroke and SCI are conditions that can significantly impact the QoL of survivors in both the physical and psychosocial domains. Both diseases often result in significant motor and sensory impairments that are not fully reversible despite current available therapies. Invasive BCIs have emerged as a promising means to bypass the site of injury and potentially restore motor and sensory function. However, to maximize the utility and participant satisfaction with such technology, particip…

A Short Introduction to Cosmology and its Current Status
Pedro G. Ferreira, Alexander Roskill
https://arxiv.org/abs/2509.12121 https://arxiv.org/pdf/2509.1…

A Short Introduction to Cosmology and its Current Status
The current cosmological model, known as the $Λ$-Cold Dark Matter model (or $Λ$CDM for short) is one of the most astonishing accomplishments of contemporary theoretical physics. It is a well-defined mathematical model which depends on very few ingredients and parameters and is able to make a range of predictions and postdictions with astonishing accuracy. It is built out of well-known physics - general relativity, quantum mechanics and atomic physics, statistical mechanics and thermodynamics …

Symmetric tensor portals to dark matter I: creation of dark scalars
Brian Dignean, Alexander J. Magnus, Rainer Dick
https://arxiv.org/abs/2509.11010 https://

Symmetric tensor portals to dark matter I: creation of dark scalars
We examine the creation of scalar dark matter through a symmetric tensor portal. We find that both freeze-in and thermal freeze-out through a symmetric tensor mediator can create scalar dark matter. The required tensor masses for freeze-in are much larger than for freeze-out for the same dark-matter mass, in agreement with the nonthermalization assumption in freeze-in scenarios.

Making the Subdominant Dominant: Gravothermal Pile-Up of Collisional Dark Matter Around Compact Objects
Reza Ebadi, Erwin H. Tanin
https://arxiv.org/abs/2507.11601

Making the Subdominant Dominant: Gravothermal Pile-Up of Collisional Dark Matter Around Compact Objects
The dark matter may consist of multiple species that interact differently. We show that a species that is cosmologically subdominant but highly collisional can pile up and become dominant in deep gravitational wells, such as those of white dwarfs and neutron stars.

Leptogenesis from Dark Matter Coannihilation
Simran Arora, Debasish Borah, Arnab Dasgupta, P. S. Bhupal Dev, Devabrat Mahanta
https://arxiv.org/abs/2509.12333 https://

Leptogenesis from Dark Matter Coannihilation
We propose a minimal extension of the type-I seesaw model to realise leptogenesis from the co-annihilation of dark sector particles. The type-I seesaw model is extended with a singlet fermion and two singlet scalars charged under a $Z_{2}$ symmetry. The $Z_{2}$-odd singlet scalar is the dark matter candidate. Here the usual type-I seesaw mechanism generates neutrino mass, and a net lepton asymmetry is generated from the co-annihilation of the dark matter and the $Z_2$-odd singlet fermion. The $…

Electromagnetic Dirac Cogenesis
Debasish Borah, Arnab Dasgupta
https://arxiv.org/abs/2507.11607 https://arxiv.org/pdf/2507.11607

Electromagnetic Dirac Cogenesis
We propose a novel cogenesis mechanism by utilising the two-body decay of heavy vector-like fermions to dark matter (DM) $χ$ and right chiral part of light Dirac neutrino $ν_R$ via the electromagnetic dipole operator. This leads to generation of asymmetry in dark fermion $χ$ as well as $ν_R$ with the latter getting transferred to left-handed lepton doublets via Yukawa interactions with a neutrinophilic Higgs doublet. While lepton asymmetry is converted into baryon asymmetry of the Universe …

Gravitational Wave Spectrum from the Production of Dark Matter via the freeze-in Mechanism
Yonghua Wang, Wei Chao
https://arxiv.org/abs/2508.10665 https://…

Gravitational Wave Spectrum from the Production of Dark Matter via the freeze-in Mechanism
Since the first detection of gravitational waves by ground-based interferometers, it has emerged as a novel probe for exploring physics in the early universe. The particle nature of cold dark matter (DM) and its underlying production mechanisms remain long-standing unresolved issues in the field. Notably, if DM is generated through the freeze-in mechanism in the early universe, direct laboratory detection becomes extraordinarily challenging due to its extremely weak coupling with standard model…