Hep-Lat, short for High Energy Physics – Lattice, explores the fundamental forces of nature by simulating particle interactions on a digital grid. Instead of relying solely on abstract equations, researchers in this field use powerful computers to model how quarks and gluons bind together, offering deep insights into the structure of matter that are often impossible to derive analytically.

Gist.Science ensures these complex discoveries from arXiv remain accessible to everyone. We process every new preprint in this category as it is posted, providing both plain-language explanations for the curious and detailed technical summaries for experts. This dual approach bridges the gap between cutting-edge simulation work and broader scientific understanding.

Below are the latest papers in High Energy Physics – Lattice, curated directly from arXiv and ready for you to explore.

Deciphering the nature of PψsΣP^{\Sigma}_{\psi s} pentaquarks in the light of their electromagnetic multipole moments

This paper utilizes QCD light-cone sum rules to calculate the electromagnetic multipole moments of Σ\Sigma-type strange hidden-charm pentaquarks, revealing distinct magnetic dipole, electric quadrupole, and magnetic octupole signatures that depend on diquark structure and provide key discriminants to differentiate between compact pentaquark and molecular interpretations.

Ulas Özdem2026-04-15⚛️ hep-lat

Neutrinoless double-beta decay of the Δ\Delta^- resonance

This paper presents a first step toward a Δ\Delta-full description of neutrinoless double-beta decay by systematically deriving the long-range and short-range contributions to the Δpee\Delta^- \to p e^-e^- transition within chiral effective field theory, including predictions for pion-mass dependence and results in the degenerate Δ\Delta-nucleon mass limit to facilitate lattice-QCD matching.

Li-Ping He, Feng-Kun Guo, Ulf-G. Meißner, De-Liang Yao, Xiao-Yu Zhang, Zhen-Hua Zhang2026-04-15⚛️ hep-lat

Open-flavor threshold effects on quarkonium spectrum in the BOEFT

This paper utilizes Born-Oppenheimer effective field theory (BOEFT) to systematically quantify open-flavor threshold effects on the quarkonium spectrum by solving coupled Schrödinger equations with lattice-constrained static potentials, successfully reproducing experimental data and providing a field-theoretical interpretation of the phenomenological 3P0^3P_0 model's pair-creation constant.

Nora Brambilla, Abhishek Mohapatra, Tommaso Scirpa, Antonio Vairo2026-04-15⚛️ nucl-th

Revealing chiral-odd two-meson generalized distribution amplitudes in ee+(ππ)(ππ)e^- e^+ \to (\pi \pi) (\pi \pi) reactions

This paper demonstrates that chiral-odd dimeson generalized distribution amplitudes, which encode the spin-orbit correlation in spin-zero mesons, can be experimentally accessed in ee+(ππ)(ππ)e^- e^+ \to (\pi \pi)(\pi \pi) reactions through the interference between leading one-photon and two-photon exchange amplitudes, offering a direct path to probe this previously unmeasured sector of meson structure at facilities like BES III.

Shohini Bhattacharya, Renaud Boussarie, Bernard Pire, Lech Szymanowski2026-04-14⚛️ hep-lat