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.

Light baryonium states with exotic quantum numbers

Using QCD sum rules, this paper systematically predicts the existence of light baryonium states with exotic 00^{--} and 0+0^{+-} quantum numbers composed of nucleon-antinucleon, Λ\Lambda-Λˉ\bar{\Lambda}, and Ξ\Xi-Ξˉ\bar{\Xi} pairs, providing specific mass estimates and decay modes that could be verified by BESIII, BELLEII, and LHCb experiments.

Bing-Dong Wan, Jun-Hao Zhang, Yan Zhang, Ming-Yang Yuan2026-05-05⚛️ hep-ph

Diffractive deep inelastic scattering in the dipole picture: the qqˉgq\bar{q}g contribution in exact kinematics

This paper computes the exact kinematic qqˉgq\bar{q}g contribution to diffractive deep inelastic scattering structure functions, demonstrating that previous high-energy approximations are insufficient and revealing an equally important soft quark contribution alongside the soft gluon term at high Q2Q^2.

Abhiram Kaushik, Heikki Mäntysaari, Jani Penttala2026-05-05⚛️ nucl-th

Probing Dark Sector Particles Coupling to Neutrinos with Double Beta Decay

This paper investigates the sensitivity of current and future neutrinoless double beta decay experiments to massive Majoron-like scalar particles coupled to neutrinos and dark sector fermions by analyzing characteristic distortions in the electron energy spectrum, ultimately projecting the ability to probe scalar-neutrino couplings as small as aν2×106|a_\nu| \approx 2\times 10^{-6} for sub-MeV particles.

Noor-Ines Boudjema, Frank F. Deppisch, Antonio Herrero-Brocal, Chayan Majumdar, Supriya Senapati2026-05-05⚛️ hep-ph

E-PCN: Jet Tagging with Explainable Particle Chebyshev Networks Using Kinematic Features

The paper introduces E-PCN, an explainable graph neural network that integrates four distinct kinematic feature-weighted graph representations to achieve state-of-the-art jet classification performance on the JetClass dataset while identifying angular separation and transverse momentum as the dominant factors driving its decisions.

Md Raqibul Islam, Adrita Khan, Mir Sazzat Hossain, Choudhury Ben Yamin Siddiqui, Md. Zakir Hossan, Tanjib Khan, M. Arshad Momen, Amin Ahsan Ali, AKM Mahbubur Rahman2026-05-05⚛️ hep-ex

Non-Thermal Production of Sexaquark Dark Matter

This paper proposes that non-thermal production mechanisms, specifically involving late-decaying reheatons in low-reheating-temperature scenarios, can naturally overcome the abundance deficit of thermal sexaquark dark matter models by linking the final relic density to the branching fraction into strange-quark-rich matter and the coalescence probability during the early universe.

Marianne Moore (MIT), Stefano Profumo (UCSC)2026-05-05✓ Author reviewed ⚛️ hep-ph

Mass Spectra of ΛQΣˉQ\Lambda_Q\bar{\Sigma}_Q Hexaquark States in QCD Sum Rules

Using QCD sum rules with dimension-12 condensates, this study calculates the mass spectra of ΛQΣˉQ\Lambda_Q\bar{\Sigma}_Q hexaquark states and finds that the ΛcΣˉc\Lambda_c\bar{\Sigma}_c ground states lie around 5.8 GeV, consistent with BESIII's non-observation of a near-threshold bound state, while also predicting masses for hidden-bottom ΛbΣˉb\Lambda_b\bar{\Sigma}_b candidates.

Xuan-Heng Zhang, Cong-Feng Qiao2026-05-05⚛️ nucl-th

Chiral symmetry restoration effects onto the meson spectrum from a Dyson-Schwinger and Bethe-Salpeter approach

This paper utilizes a Dyson-Schwinger and Bethe-Salpeter approach to demonstrate that the transition from chiral symmetry breaking to restoration in light meson spectra is governed by the location of quark propagator poles relative to the integration domain, offering new insights into the potential emergence of chiral spin symmetry in QCD.

Reinhard Alkofer, Christian S. Fischer, Fabian Zierler2026-05-05⚛️ nucl-th