Freeze-in dark matter in neutron stars

This paper proposes that neutron stars, formed in core-collapse supernovae with early-Universe-like temperatures, can produce and retain freeze-in dark matter which subsequently annihilates to inject energy, thereby offering a unique method to constrain extremely weakly coupled dark matter models with scattering cross-sections as low as O(1070)cm2O(10^{-70})\,\rm cm^2 through observable late-time heating signatures.

Maxim Pospelov, Samya RoychowdhuryFri, 13 Ma⚛️ hep-ph

Transverse Structure of the Kaon: A light-front Hamiltonian Approach

This paper employs the Basis Light-Front Quantization framework to provide the first theoretical predictions of kaon subleading-twist transverse-momentum-dependent parton distribution functions by explicitly accounting for the interference between quark-antiquark and quark-antiquark-gluon Fock sectors, while also presenting twist-2 and twist-3 collinear parton distribution functions that align well with recent global analyses.

Yuanqi Lu, Zhimin Zhu, Jiangshan Lan, Chandan Mondal, Xingbo Zhao, James P. VaryFri, 13 Ma⚛️ nucl-th

Energy-momentum tensor form factors and spin density distribution in the nucleon calculated in a quantized Skyrme model with vector mesons

This paper investigates energy-momentum tensor form factors and spatial spin density distributions in the nucleon using a quantized Skyrme model with vector mesons, demonstrating that while global nucleon properties remain invariant, the choice of pseudogauge (canonical versus Belinfante) significantly alters the local interpretation of spin and momentum densities.

Kenji Fukushima, Tomoya UjiFri, 13 Ma⚛️ nucl-th

Particle productions in ppˉp\bar{p} collisions in the PACIAE 4.0 model

The study validates the PACIAE 4.0 model's reliability in describing particle production in proton-antiproton collisions and demonstrates that initial-state baryon-number differences significantly enhance low-energy nucleon production while having negligible effects at high energies or for high-multiplicity particles.

Z. Xie, A. K. Lei, H. Zheng, W. C. Zhang, D. M. Zhou, Z. L. She, Y. L. Yan, B. H. SaFri, 13 Ma⚛️ hep-ex

Sensitivity to Axion-like Particle dark matter with very-high-energy gamma-ray observations of Active Galactic Nuclei located behind Galaxy Clusters

This paper presents a forecast study demonstrating that a stacking analysis of very-high-energy gamma-ray observations from active galactic nuclei located behind galaxy clusters can probe Axion-Like Particle dark matter in the $10^{-8}to to 10^{-7}eVmassrange,achievingsensitivitytoALPphotoncouplingsaslowas eV mass range, achieving sensitivity to ALP-photon couplings as low as 6\times10^{-13}GeV GeV^{-1}$.

Cervane Grimaud, Denys Malyshev, Emmanuel MoulinFri, 13 Ma⚛️ hep-ph

Assessing the robustness of amortized simulation-based inference to transient noise in gravitational-wave ringdowns

This paper proposes an amortized simulation-based inference method using neural posterior estimation for gravitational-wave ringdown analysis, demonstrating that it achieves statistically consistent parameter estimates orders of magnitude faster than traditional Markov-chain methods while revealing that transient noise contamination significantly biases mass and spin estimates, particularly when glitches occur during the signal's tail.

Song-Tao Liu, Tian-Yang Sun, Yu-Xin Wang, Yong-Xin Zhang, Shang-Jie Jin, Jing-Fei Zhang, Xin ZhangFri, 13 Ma⚛️ gr-qc

Factorization vs. Non-Factorization: S-Matrix Corrections for Precision Neutrino Physics

This paper presents a coherent S-matrix treatment of the entire neutrino experimental chain that reveals non-factorizable corrections arising from spin and angular correlations, which introduce significant systematic shifts in energy spectra and enable the direct measurement of Majorana CP phases, thereby challenging the standard factorization assumption crucial for next-generation precision neutrino physics.

D. Delepine, A. YebraFri, 13 Ma⚛️ hep-ph

Dˉ\bar{D}-meson Nucleon Scattering from Lattice QCD at the Physical Point

This paper presents the first lattice QCD study of Dˉ\bar{D}-meson nucleon scattering at the physical point using the HAL QCD method, revealing that while the interaction features a short-range repulsive core and a shallow attractive pocket with the I=0I=0 channel being more attractive than I=1I=1, no bound states (pentaquarks) are found in either isospin channel.

Wren Yamada, Yan Lyu, Kotaro Murakami, Takumi DoiFri, 13 Ma⚛️ hep-lat

Charged Higgs Boson Phenomenology in the Dark Z mediated Fermionic Dark Matter Model

This paper investigates the phenomenology of a light charged Higgs boson ($110 < m_{H^\pm} < 170GeV)withinafermionicdarkmattermodelmediatedbyalight GeV) within a fermionic dark matter model mediated by a light Z'$ boson, analyzing its production mechanisms at the LHC, current experimental constraints from ATLAS and CMS, and its interplay with dark matter properties.

Kyu Jung Bae, Jinn-Ouk Gong, Dong-Won Jung + 3 more2026-03-11⚛️ hep-ph

Strongly electroweak phase transition with U(1)LμLτU(1)_{L_μ-L_τ} gauged non-zero hypercharge triplet

This paper proposes a Standard Model extension featuring three non-zero hypercharge triplets under a U(1)LμLτU(1)_{L_\mu-L_\tau} gauge symmetry, demonstrating that the model can simultaneously satisfy vacuum stability up to the Planck scale, perturbative unitarity up to $10^{12}$ GeV, and a strongly first-order electroweak phase transition with detectable gravitational wave signatures at LISA and BBO.

Shilpa Jangid, Anirban Biswas, Seong Chan Park2026-03-11⚛️ hep-ph