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.

⚛️ lattice

Heavy-Meson Bag Parameters using Gradient Flow

This paper demonstrates that the gradient flow combined with short flow-time expansion (GF+SFTX) serves as an effective renormalization procedure for calculating precise $\overline{\text{MS}}$ bag parameters of four-quark operators relevant to neutral heavy-meson mixing and lifetimes, successfully applying this method to six RBC/UKQCD domain-wall fermion ensembles to obtain results consistent with existing determinations while providing a robust framework for handling power-divergent mixing in future lattice computations.

Matthew Black, Robert V. Harlander, Jonas T. Kohnen, Fabian Lange, Antonio Rago, Andrea Shindler, Oliver Witzel2026-03-31

⚛️ high-energy theory

Quantized Dissipation from the Inverse-Square Anomaly in a Non-Hermitian Klein-Gordon Field

This paper presents an exactly solvable non-Hermitian Klein-Gordon model where an anomalous inverse-square potential, combined with outgoing boundary conditions, transforms the fall-to-the-center instability into a discrete, log-periodic spectrum of complex energies, thereby establishing a universal framework for quantized dissipation and emergent scale anomalies in relativistic open quantum systems.

Mansour Haghighat, Ali Nouri2026-03-31

⚛️ lattice

Hadron Structure from lattice QCD in the context of the Electron-Ion Collider

This paper reviews recent advances in lattice QCD calculations of hadron structure, specifically for pions, kaons, and nucleons, highlighting how these theoretical developments provide essential insights to inform the scientific agenda of the Electron-Ion Collider.

Constantia Alexandrou (University of Cyprus,The Cyprus Institute)2026-03-31

⚛️ phenomenology

Removing the Cosmological Bound on the Axion Scale via Confinement During Inflation

This paper proposes that implementing early axion relaxation through high-scale confinement within an $SU(5)$ grand unified theory during inflation generates an early potential that dilutes the axion's energy density, thereby removing the cosmological upper bound on the axion decay constant and allowing it to serve as a viable dark matter candidate for arbitrarily large values across all known axion models.

Gia Dvali, Sophia Fitz, Lucy Komisel2026-03-31

⚛️ high-energy experiments

Structure-dependent radiative corrections to $e^+ e^- \to \pi^+ \pi^- \gamma$ in the GVMD approach

This paper computes next-to-leading order radiative corrections to the $e^+ e^- \to \pi^+ \pi^- \gamma$ process by incorporating the non-perturbative pion structure via the generalized vector meson dominance model, comparing these results with the naive scalar QED approach to quantify model uncertainties for radiative return experiments at flavor factories.

Carlo M. Carloni Calame, Marco Ghilardi, Andrea Gurgone, Guido Montagna, Mauro Moretti, Oreste Nicrosini, Fulvio Piccini (…)2026-03-31

⚛️ phenomenology

The $B^{()}\bar{K}^{()}$ -coupled-channel system in the hidden-gauge approach

This paper utilizes the Hidden Gauge Formalism to predict six bottom-strange molecular states, identifying specific mass values for $B\bar{K}$ and $B^*\bar{K}$ partners of known charmed mesons and interpreting recent LHCb observations around 6100–6160 MeV as $B\bar{K}^*$ and $B^*\bar{K}^*$ molecular states.

J. Sánchez-Illana, R. Molina, Pan-Pan Shi2026-03-31

⚛️ high-energy theory

Scattering in strong field QED in a non-null background

This paper derives master formulae for tree-level and one-loop scattering amplitudes of arbitrary photon numbers in scalar and spinor QED within non-null background electromagnetic fields using the worldline formalism, thereby extending previous constant-field results to account for realistic laser-plasma dispersive properties through a systematic expansion in the non-null parameter.

Patrick Copinger, James P. Edwards, Karthik Rajeev2026-03-31

⚛️ nuclear theory

Hadron spectra and thermodynamics for all quark flavors from a universal Hagedorn temperature

This paper demonstrates that a universal Hagedorn temperature derived from string dynamics successfully describes the hadron spectra and thermodynamics of all quark flavors, including heavy charmed hadrons, without requiring additional parameters beyond current quark masses.

Michał Marczenko, Larry McLerran, Krzysztof Redlich2026-03-31

⚛️ general relativity

Probing soft signals of gravitational-wave memory with space-based interferometers

This paper investigates the detection prospects of gravitational-wave displacement memory signals using future space-based interferometers, demonstrating that such soft signals from compact binary mergers and scattering events can be independently measured by a single LISA-like detector and precisely constrained by a LISA-Taiji network.

Yan Cao, Yong-Liang Ma, Yong Tang2026-03-31

⚛️ nuclear theory

Charge-Dependent Directed Flow in Symmetric Nuclear Collisions

This study utilizes the string-melting AMPT model to demonstrate that in symmetric nuclear collisions at 200 GeV, charge-dependent directed flow splitting exhibits a distinct baryon-meson dichotomy driven by transported quarks during the partonic phase, with significant system-size dependence at high transverse momentum that establishes a baseline for interpreting electromagnetic field effects.

Vipul Bairathi, Kishora Nayak2026-03-31

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