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.

⚛️ high-energy experiments

A Pythia8 Tune for Open Charm and Beauty Production in Fixed-Target Collisions

This paper introduces FTFT, a new set of Pythia8 parameters optimized for simulating open charm and beauty production in fixed-target collisions at s≃20−42\sqrt{s} \simeq 20-42 GeV by fitting differential distributions to experimental data and applying beam-specific K-factors to improve predictions for neutrino fluxes and hidden-particle yields in beam-dump experiments like SHiP.

Matei Climescu, Didar Dobur, Kirill Skovpen2026-09-01
⚛️ phenomenology

Higgs boson pair production in SMEFT: shape and truncation studies

This paper presents a comparative study of Higgs boson pair production in SMEFT at NLO QCD, demonstrating that while some Wilson coefficient scenarios remain valid under linear truncation, others with large anomalous couplings produce unphysical differential cross sections, thereby exposing the necessity of including quadratic dimension-6 contributions to accurately capture shape distortions in kinematic distributions.

Manosch Bär, Bakar Chargeishvili, Ramona Gröber, Gudrun Heinrich, Konstantin Schmid2026-09-01
⚛️ phenomenology

Probability-based Estimates of the Uncalculated N5^5LO QCD Contribution to the Hadronic WW-Boson Decay Width

This paper employs Bayesian analysis combined with the Principle of Maximum Conformality to estimate the uncalculated N5LO\mathrm{N^5LO} QCD contribution to the hadronic WW-boson decay width, yielding a precise branching ratio of (65.84±1.54)%(65.84\pm 1.54)\% that aligns with experimental data.

Shu-Heng Yang, Jiang Yan, Xing-Gang Wu, Zhi-Fei Wu2026-09-01
⚛️ phenomenology

(g−2)ℓ(g-2)_{\ell} and LFV decays in a U(1)Lμ−LτU(1)_{L_{\mu} -L_{\tau}} left-right model with inverse seesaw neutrinos

This paper demonstrates that a U(1)Lμ−LτU(1)_{L_{\mu} -L_{\tau}} left-right model with inverse seesaw neutrinos can simultaneously explain the observed discrepancies in the anomalous magnetic moments of electrons and muons via heavy singly charged Higgs boson contributions while naturally suppressing lepton-flavor violating decays due to the underlying gauge symmetry.

L. T. Hue, Vo Quoc Phong, T. D. Tham, N. H. T. Nha2026-09-01
⚛️ high-energy experiments

Searching for Extra Dimensions and Copies of the Standard Model with IceCube

Using 10.7 years of high-energy upward-going muon neutrino data from the IceCube Neutrino Observatory, this study places the strongest or previously unexplored constraints on low-scale gravity scenarios by limiting the compactification radius of large extra dimensions and the number of Standard Model copies.

R. Abbasi, M. Ackermann, J. Adams, J. A. Aguilar, M. Ahlers, J. M. Alameddine, S. Ali, N. M. Amin, K. Andeen, C. Arg{üel (…)2026-09-01
⚛️ phenomenology

Kaon gravitational form factors and mechanical structure in a three-flavor NJL model

Using a three-flavor Nambu–Jona-Lasinio model with proper-time regularization, this study investigates the kaon's gravitational form factors and mechanical structure, revealing that explicit flavor-symmetry breaking leads to a dominant strange-quark contribution, a less negative DD-term, and more compact mechanical distributions with enhanced central pressure compared to the pion.

Zhibo Liu, Hiroaki Abuki2026-09-01