⚛️ Category

hep-ph

5626 papers

Hep-Ph explores the fundamental forces that govern how particles interact and behave at the smallest scales imaginable. This field bridges the gap between theoretical predictions and experimental reality, helping scientists understand the building blocks of our universe without getting lost in complex mathematics. Whether investigating the Higgs boson or searching for new physics beyond current models, these studies push the boundaries of human knowledge about matter and energy.

At Gist.Science, we process every new preprint in this category as soon as it appears on arXiv. We strip away the dense jargon to offer both accessible plain-language explanations and detailed technical summaries, ensuring that groundbreaking research is understandable to everyone from students to seasoned experts. Below are the latest papers in this dynamic field, ready for you to explore with clarity and depth.

⚛️ high-energy theory

Hybrid thermalization in the large NN limit

This paper establishes that in the large NN limit of semi-holographic gauge theories, the unique global thermal equilibrium state—characterized by a single physical temperature and maximum entropy—is the inevitable relaxation outcome for typical non-equilibrium states with sufficiently high energy density, despite the system's capacity to sustain a pseudo-equilibrium with distinct temperatures between its perturbative and non-perturbative subsectors.

Toshali Mitra, Sukrut Mondkar, Ayan Mukhopadhyay, Alexander Soloviev2026-01-15
⚛️ phenomenology

Columbia plot based on symmetry-improved CJT formalism in linear sigma model

This paper employs the symmetry-improved Cornwall-Jackiw-Tomboulis formalism within a three-flavor linear sigma model to resolve artificial chiral symmetry breaking issues in the conventional approach, thereby mapping the Columbia plot and identifying a first-order phase transition with a tricritical point at a specific strange quark mass and a critical pion mass of approximately 52.4 MeV in the three-flavor symmetric limit.

Yuepeng Guan, Mamiya Kawaguchi, Shinya Matsuzaki, Akio Tomiya2026-01-15
⚛️ phenomenology

Energy flow and radiation efficiency in radiative GRMHD simulations of neutron star ultraluminous X-ray sources

This study utilizes radiative general relativistic magnetohydrodynamic simulations to demonstrate that neutron star ultraluminous X-ray sources can be explained by weaker magnetic fields and higher accretion rates, which enhance outflow power and beaming to produce apparent luminosities consistent with observations despite lower intrinsic radiation efficiency.

Fatemeh Kayanikhoo, Włodek Kluźniak, David Abarca, Miljenko Cemeljic2026-01-15
⚛️ high-energy experiments

Probing the Parameter Space of Axion-Like Particles Using Simulation-Based Inference

This paper demonstrates the application of Truncated Marginal Neural Ratio Estimation (TMNRE) within the Swyft framework to constrain axion-like particle parameters using simulated Cherenkov Telescope Array observations of NGC 1275, showcasing a robust alternative to standard likelihood-based methods for handling complex models with numerous nuisance parameters.

Pooja Bhattacharjee, Christopher Eckner, Gabrijela Zaharijas, Gert Kluge, Giacomo D'Amico2026-01-15
⚛️ phenomenology

Absence of Majorana-Weyl fermions in d=4 and the theory of Majorana fermions

This paper argues that the conventional definition of a Majorana fermion as a single chiral field plus its charge conjugate is inconsistent with the absence of Majorana-Weyl fermions in four dimensions, proposing instead that true Majorana fermions in the type I seesaw model arise only through a Bogoliubov transformation of chiral fields, a distinction that has direct implications for neutrinoless double beta decay.

Kazuo Fujikawa2026-01-15
⚛️ phenomenology

Heavy Neutrinos across the Electroweak-to-Multi-TeV Frontier via Novel ML-Enhanced Probes

This paper proposes a novel machine-learning-enhanced strategy using gradient-boosted decision trees to probe heavy neutrinos with non-universal couplings across a mass range of 50 GeV to 10 TeV at the High-Luminosity LHC, demonstrating sensitivity to mixing parameters between 10−510^{-5} and 1 by leveraging both ss-channel and vector boson fusion production mechanisms.

Yin-Fa Shen, Alfredo Gurrola, Francesco Romeo, Denis Rathjens, Andres Flórez2026-01-15