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.

⚛️ phenomenology

SMEFT-Pheno-Agent: a natural-language-driven AI agent for machine-learning-assisted Standard Model Effective Field Theory phenomenology

SMEFT-Pheno-Agent is a natural-language-driven AI agent that orchestrates a fully automated, reproducible twelve-phase Python workflow for machine-learning-assisted Standard Model Effective Field Theory phenomenology by translating user intent into validated simulation and analysis tasks while maintaining strict auditability through machine-readable phase manifests.

Yu-Chen Guo, Jie Wang, Ji-Chong Yang2026-07-27

⚛️ lattice

Hot and Dense Medium Effects on the $B_s^$ and $B^$ Multiplets

Using QCD sum rules at finite temperature and density, this study reveals that while the in-medium masses of $B_s^*$ and $B^*$ multiplets remain remarkably stable with only minor shifts, their decay constants are highly sensitive to the medium, exhibiting significant particle-antiparticle asymmetry driven by baryon density that provides a theoretical foundation for future heavy-ion collision experiments.

K. Azizi, N. Er, J. Y. Süngü2026-07-27

⚛️ phenomenology

Baryon-number-violating nucleon decays into a dark photon particle

This paper establishes a theoretical framework using an extended low-energy effective field theory and chiral perturbation theory to systematically analyze baryon-number-violating nucleon decays into dark photons, deriving decay expressions and setting stringent constraints on these exotic modes by reinterpreting existing experimental data.

Jin-Han Liang, Yi Liao, Xiao-Dong Ma, Xiang Zhao2026-07-27

⚛️ high-energy theory

Dilatonic states, phase transitions, and criticality in holography

This paper reviews a holographic research program investigating the conditions under which a parametrically light dilaton can emerge as a bound state in confining gauge theories near a zero-temperature phase transition, utilizing both bottom-up and top-down gauge-gravity duality approaches to identify critical points where the dilaton mass is suppressed relative to the confinement scale.

Daniel Elander, Maurizio Piai2026-07-27

⚛️ high-energy theory

One-loop effective potential in Kalb-Ramond scalar electrodynamics

This paper computes the one-loop renormalized effective potential for Kalb-Ramond scalar electrodynamics using dimensional regularization, demonstrating that the additional tensor interaction modifies the vacuum structure while maintaining perturbative consistency.

Pratik Chattopadhyay, M. J. Neves2026-07-27

⚛️ phenomenology

Revisiting stochastic inflation with perturbation theory

This paper revisits the assumptions of the stochastic inflation formalism to demonstrate that standard treatments neglect super-long-wavelength modes, and uses perturbation theory to show that consistently accounting for these modes via virtual loop effects induces definite corrections to the Langevin and Fokker-Planck equations.

Gonzalo A. Palma, Spyros Sypsas2026-07-24

⚛️ general relativity

LQG-modified dispersion relations and the problem of cosmic photons threshold anomalies

This paper investigates how combining Lorentz invariance violation with loop quantum gravity-modified photon dispersion relations explains cosmic photon threshold anomalies, specifically addressing gamma-ray attenuation by background radiation to bridge LQG theory with ultra-high-energy astrophysical observations.

P. A. L. Mourão, G. L. L. W. Levy, J. A. Helayël-Neto2026-07-24

⚛️ quantum physics

Work and heat exchanged during sudden quenches of strongly coupled quantum systems

This paper investigates the definitions of thermodynamic quantities for strongly coupled quantum systems during sudden quenches, demonstrating that while the first law holds for three candidate definitions, only two satisfy the second law of thermodynamics.

Zohreh Davoudi, Christopher Jarzynski, Niklas Mueller, Greeshma Oruganti, Connor Powers, Nicole Yunger Halpern2026-07-24

🔭 astrophysics

Echoes of Self-Interacting Dark Matter from Binary Black Hole Mergers

This paper demonstrates through $N$ -body simulations that binary black hole mergers within self-interacting dark matter (SIDM) spikes produce distinct gravitational wave dephasing patterns, offering the Laser Interferometer Space Antenna (LISA) a potential method to distinguish SIDM environments from collisionless dark matter scenarios.

Amitayus Banik, Jeong Han Kim, Jun Seung Pi, Yuhsin Tsai2026-07-24

⚛️ high-energy theory

Positivity in the Renormalization of Effective Field Theory

This paper establishes a theorem demonstrating that fundamental infrared principles—unitarity, analyticity, and Lorentz invariance—constrain the sign of one-loop coupling running in effective field theories, thereby determining whether renormalization effects preserve or violate positivity bounds derived from tree-level amplitudes.

You-Peng Liao, Jasper Roosmale Nepveu, Chia-Hsien Shen2026-07-24

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hep-ph

SMEFT-Pheno-Agent: a natural-language-driven AI agent for machine-learning-assisted Standard Model Effective Field Theory phenomenology

Hot and Dense Medium Effects on the Bs∗B_s^*Bs∗​ and B∗B^*B∗ Multiplets

Baryon-number-violating nucleon decays into a dark photon particle

Dilatonic states, phase transitions, and criticality in holography

One-loop effective potential in Kalb-Ramond scalar electrodynamics

Revisiting stochastic inflation with perturbation theory

LQG-modified dispersion relations and the problem of cosmic photons threshold anomalies

Work and heat exchanged during sudden quenches of strongly coupled quantum systems

Echoes of Self-Interacting Dark Matter from Binary Black Hole Mergers

Positivity in the Renormalization of Effective Field Theory

Hot and Dense Medium Effects on the $B_s^$ and $B^$ Multiplets