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.

⚛️ lattice

ΞbΞ\Xi_b \to \Xi form factors from lattice QCD and Standard-Model predictions for ΞbΞμ+μ\Xi_b \to \Xi \mu^+\mu^- and ΞbΞγ\Xi_b \to \Xi \gamma decays

This paper presents the first lattice QCD calculation of ΞbΞ\Xi_b \to \Xi form factors using 2+1 flavor domain-wall fermions and an anisotropic clover action for the bottom quark, which are then utilized to provide Standard-Model predictions for the branching fractions and angular observables of the rare decays ΞbΞγ\Xi_b^- \to \Xi^- \gamma and ΞbΞμ+μ\Xi_b^- \to \Xi^- \mu^+\mu^-.

Callum Farrell, Stefan Meinel2026-03-20
⚛️ lattice

The impact of prescriptions in phenomenological extractions of Transverse Momentum Dependent distributions

This paper demonstrates that the choice of bb_* prescription in the Collins-Soper-Sterman framework introduces a significant intrinsic theoretical uncertainty in Transverse Momentum Dependent distribution extractions, yielding consistent results for low-energy data but causing substantial discrepancies in intermediate-to-high energy predictions.

Matteo Cerutti, Andrea Simonelli2026-03-20
⚛️ lattice

Spectral reconstruction techniques, their shortcomings and relevance to the electric conductivity coefficient

This paper evaluates a machine learning framework and a novel multipoint method for the ill-posed spectral reconstruction problem by comparing them against established techniques on mock data, then applying the most effective approaches to quenched lattice data to extract the electric conductivity in the presence of a non-zero external magnetic field.

C. Andratschke, B. B. Brandt, E. Garnacho-Velasco, L. Pannullo, S. Singh, A. Dean M. Valois2026-03-20
⚛️ lattice

KπK \pi scattering as a step towards BK+B \to K^* \ell^+ \ell^- from Lattice QCD

This paper presents the status of an exploratory lattice QCD calculation utilizing a dual heavy-quark strategy and the 1+J21+J\to2 finite-volume formalism to determine the hadronic matrix elements for the resonant KπK\pi final state, a crucial step toward achieving precise Standard Model predictions for the BK+B\to K^*\ell^+\ell^- decay.

Felix Erben, Matthew Black, Peter Boyle, Matteo Di Carlo, Vera Gülpers, Maxwell T. Hansen, Nelson Pitanga Lachini, Rajna (…)2026-03-19