hep-ph papers | Gist.Science

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.

Causality and stability analysis of relativistic spin hydrodynamics: insights from a nonvanishing spin density background

This paper analyzes the stability and causality of relativistic spin hydrodynamics with a nonvanishing spin-density background, demonstrating that while first-order theories exhibit acausal behavior at high wave-vectors, the minimal causal framework resolves this issue by revealing complex, direction-dependent stability conditions that prevent simultaneous satisfaction of stability and causality in certain regimes.

Wei Lu, Yang Zhong, Sheng-Qin Feng2026-03-24⚛️ hep-ph

Reheating Effects on Charged Lepton Yukawa Equilibration and Leptogenesis

This paper demonstrates that accounting for a non-instantaneous reheating phase after inflation significantly alters the charged lepton Yukawa equilibration temperature, thereby necessitating a revision of flavor regimes in leptogenesis models where right-handed neutrinos are produced and decay during this extended period.

Rishav Roshan2026-03-24⚛️ hep-ph

Thermal modification of $K_1(1270)\to \pi^+\pi^-K^+$ in a hot hadronic medium

This paper investigates the thermal modification of the $K_1(1270)\to \pi^+\pi^-K^+$ decay in a hot hadronic medium, finding that the dominant effect is a kinematic suppression of the decay width and significant distortion of Dalitz distributions caused by the temperature-induced reduction of the parent $K_1$ mass, which compresses the available phase space.

Seung-il Nam2026-03-24⚛️ hep-ph

Light-cone Distribution Amplitudes of Vector Mesons within the Self-Consistent Light-front Quark Model

This paper investigates the twist-2 and twist-3 light-cone distribution amplitudes of vector mesons within a self-consistent light-front quark model, revealing that flavor symmetry breaking significantly impacts twist-3 amplitudes while demonstrating that spin independence emerges in the heavy quark limit, causing the distribution amplitudes of vector and pseudoscalar mesons to converge.

Xiao-Nan Li, Shuai Xu, Qin Chang2026-03-24⚛️ hep-ph

Solving Functional Renormalization Group Equations with Neural Networks

This paper demonstrates that physics-driven deep neural networks, which embed functional renormalization group flow equations directly into their loss functions and utilize an analytical-large- $N$ plus learned-correction decomposition, provide a robust and accurate numerical framework for solving scale-dependent effective potentials and fixed-point problems in nonperturbative quantum field theory without requiring precomputed training data.

Yang-yang Tan, Wei-jie Fu, Lianyi He, Lingxiao Wang2026-03-24⚛️ hep-ph

Production correlation of light (hyper-)nuclei in Au-Au collisions from the RHIC Beam Energy Scan

This paper employs a quark combination model within a hadronic coalescence framework to systematically analyze the production of light nuclei and hypernuclei in Au-Au collisions across the RHIC Beam Energy Scan, successfully explaining existing experimental data for species like deuterons and hypertritons while predicting yields for various $\Omega$ -hypernuclei and exploring their production correlations as a function of collision energy.

Jiang-He Qiao, Jian-Yu Liu, Yan-Ting Feng, Feng-Lan Shao, Rui-Qin Wang2026-03-24⚛️ nucl-th

Hyperbolic form factors for Yukawa interactions, and applications to the Earth

This paper introduces the hyperbolic form factor as a bilateral Laplace transform of density distributions to model Yukawa interactions mediated by massive particles, applying it to Earth's density profile to derive significantly relaxed coupling limits for new spin-0 and spin-1 mediators with masses around $10^{-12}$ eV/ $c^2$ .

Pierre Fayet2026-03-24⚛️ hep-ph

B-jet Tagging Using a Hybrid Edge Convolution and Transformer Architecture

This paper introduces the Edge Convolution Transformer (ECT), a hybrid deep learning architecture that combines edge convolutions and self-attention mechanisms to achieve state-of-the-art b-jet tagging performance (0.9333 AUC) with low inference latency on ATLAS simulation data, outperforming both ParticleNet and pure transformer baselines.

Diego F. Vasquez Plaza, Vidya Manian2026-03-24⚛️ hep-ph

From Higgs physics to lepton flavour violation: current bounds and future prospects for vector-like lepton models

This paper presents a comprehensive phenomenological study of six vector-like lepton models with seesaw-like mass contributions, systematically analyzing their constraints and correlations across Higgs physics, lepton flavor violation, and collider observables in light of current and upcoming experimental data.

Gregor Daberstiel, Kilian Möhling, Dominik Stöckinger, Hyejung Stöckinger-Kim2026-03-24⚛️ hep-ph

CP-violation and its implications in a complex singlet extension of 2HDM

This paper investigates CP-violation in a complex singlet extension of the Two Higgs Doublet Model with Yukawa alignment, demonstrating how the additional scalar sector provides greater freedom to satisfy electric dipole moment constraints while incorporating dark matter and exploring detection prospects for CP-violating phases at future colliders.

Jayita Lahiri, Gudrid Moortgat-Pick2026-03-24⚛️ hep-ph

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