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.

⚛️ nuclear theory

A Bayesian Inference of Hybrid Stars with Large Quark Cores

This study employs Bayesian inference with hadronic and quark matter models to demonstrate that while the presence of large quark cores in 1.4 solar mass neutron stars depends on the specific quark model used, both frameworks predict quark matter in 2 solar mass stars, with the mass-radius curve slope serving as a key indicator of non-nucleonic matter.

Milena Albino, Tuhin Malik, Márcio Ferreira, Constança Providência2026-02-20
⚛️ nuclear theory

Anisotropic flows in Au+Au collisions at sNN=2.4GeV\sqrt{s_{\rm{NN}}} = 2.4\,\text{GeV} with a Skyrme pseudopotential

Using a lattice Boltzmann-Uehling-Uhlenbeck transport model with a density-, momentum-, and isospin-dependent N5^5LO Skyrme pseudopotential, this study analyzes proton anisotropic flows in Au+Au collisions at sNN=2.4GeV\sqrt{s_{\rm{NN}}} = 2.4\,\text{GeV} to demonstrate their strong sensitivity to momentum-dependent mean-field potentials and the symmetric nuclear matter incompressibility, while highlighting the need to incorporate higher-order equation-of-state parameters and in-medium cross-section modifications for future Bayesian extractions of nuclear matter properties.

Xin Li, Si-Pei Wang, Rui Wang, Zhen Zhang, Jie Pu, Chun-Wang Ma, Lie-Wen Chen2026-02-20
⚛️ high-energy experiments

DAMSA Experiment Conceptual Design White Paper

The DAMSA conceptual design white paper proposes a novel short-baseline accelerator experiment utilizing the PIP-II LINAC to probe MeV-to-sub-GeV dark-sector messengers and rare Standard Model signals by overcoming beam-dump sensitivity limits with a compact detector, a strategy whose feasibility will be validated through the proposed Little DAMSA Path-Finder (LDPF) proof-of-concept experiment.

Prithak Bhattarai, Andrew Brandt, Alan Bross, Bradley Brown, Samriddha Chakraborty, Haohui Che, Bhupal Dev, Bhaskar Dutt (…)2026-02-20
⚛️ phenomenology

Testing the cosmic distance-duality relation with localized fast radio bursts: a cosmological model-independent study

This study employs a cosmological model-independent artificial neural network approach to reconstruct angular-diameter distances from localized Fast Radio Bursts and compare them with Type Ia supernova luminosity distances, finding no statistically significant evidence for deviations from the cosmic distance-duality relation.

Jéferson A. S. Fortunato, Surajit Kalita, Amanda Weltman2026-02-20
⚛️ phenomenology

Relativistic corrections to gluon fragmentation into the 3PJ[1,8]^3P_{J}^{[1,8]} states

This paper computes relativistic corrections to gluon fragmentation into heavy quarkonium 3PJ[1,8]^3P_J^{[1,8]} states within the NRQCD framework, revealing that SS-DD mixing is required to handle infrared divergences and that substantial negative corrections significantly impact J/ψJ/\psi production predictions at the LHC.

Zhi-Guo He, Bernd A. Kniehl, Peng Zhang2026-02-20
⚛️ phenomenology

Tri-Resonant Leptogenesis in a Non-Holomorphic Modular A4_4 Scotogenic Model

This paper proposes a non-holomorphic modular A4A_4 scotogenic model with tri-resonant leptogenesis that successfully generates baryogenesis at the low scale of 537\sim 537 GeV for both normal and inverted neutrino mass hierarchies, while predicting specific neutrino oscillation parameters and being constrained by cosmological data that currently disfavors the inverted hierarchy scenario.

Tapender, Surender Verma2026-02-20