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

Next-to-next-to-leading order event generation for ttˉHt\bar{t}H production with approximate two-loop amplitude

This paper presents the first next-to-next-to-leading order (NNLO) QCD event generation for ttˉHt\bar{t}H production matched to parton showers using the MiNNLOPS method, which incorporates a novel pointwise combination of soft and high-energy two-loop amplitude approximations to provide robust, publicly available predictions for Higgs-boson decay into photons with off-shell top-quark decays.

Christian Biello, Chiara Savoini, Chiara Signorile-Signorile, Marius Wiesemann2026-03-09
⚛️ phenomenology

Latin American HECAP Physics Briefing Book 2025

This paper presents the updated 2025 Physics Briefing Book for the Latin American Strategy Forum for Research Infrastructure in High Energy, Cosmology, and Astroparticle Physics (LASF4RI-HECAP), which synthesizes 46 community white papers and symposium discussions to establish a long-term strategic roadmap across seven key scientific and technical working groups.

Mario A. Acero (U. del Atlántico - Colombia), Alexis A. Aguilar-Arevalo (UNAM - México), Belén Andrada (CNEA/CONICET/UNS (…)2026-03-09
⚛️ phenomenology

Efficient Numerical Evaluation of a Two-Loop Contribution to the Dark-Matter Trispectrum

This paper presents a numerically efficient method for evaluating a two-loop contribution to the dark-matter trispectrum by expanding around a fixed reference cosmology, achieving sub-percent accuracy with only third-order terms and offering a practical pathway for faster computations of higher-order correlators in the Effective Field Theory of Large-Scale Structure.

Andrea Favorito2026-03-09
⚛️ phenomenology

Vacuum Stability in the Standard Model and Beyond

This paper re-evaluates Standard Model vacuum stability using high-order perturbations and precise parameters to show that improved measurements of the top mass and strong coupling could confirm stability at the 5σ5\sigma level, while also exploring viable singlet scalar extensions that remain stable up to the Planck scale and predicting significant deviations in Higgs couplings testable at current and future colliders.

Gudrun Hiller, Tim Höhne, Daniel F. Litim, Tom Steudtner2026-03-06