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.

SUSY meets SMEFT: Complete one-loop matching of the general MSSM

This paper presents the complete one-loop matching of the general 124-parameter MSSM with conserved R-parity onto both the SMEFT and the two-Higgs-doublet-model EFT using the Matchete package, providing a comprehensive framework for systematic global studies of supersymmetric parameter space while retaining full flavor structure and non-degenerate superpartner masses.

Sabine Kraml, Andre Lessa, Suraj Prakash, Felix Wilsch2026-04-09⚛️ hep-ph

Projections of Hττ\to\tau\tau cross-section at FCC-ee

This paper presents projections for the precision of Higgs boson cross-section measurements in the Hττ\to\tau\tau decay channel at the FCC-ee across multiple production mechanisms and energies, demonstrating an expected improvement of at least an order of magnitude over current LHC sensitivities through advanced tau decay reconstruction techniques.

Sofia Giappichini, Markus Klute, Matteo Presilla, Xunwu Zuo, Maria Cepeda2026-04-09⚛️ hep-ph

Revisiting μ\mu-ee conversion in RR-parity violating SUSY

This paper revisits μ\mu-ee conversion in R-parity violating supersymmetry by incorporating renormalization group running effects to derive updated constraints on trilinear couplings, demonstrating that while these effects are often modest, they can significantly tighten limits in specific cases and highlighting the superior sensitivity of upcoming COMET and Mu2e experiments compared to current decay searches.

Yu-Qi Xiao, Xiao-Gang He, Hong-Yi Niu, Rong-Rong Zhang2026-04-09⚛️ hep-ph

Nucleon axial-vector form factor and radius from radiatively-corrected antineutrino scattering data

This paper applies radiative corrections to recent MINERvA antineutrino-hydrogen scattering data to extract the nucleon axial-vector form factor and radius, thereby enabling more precise comparisons with lattice QCD predictions and reducing uncertainties in neutrino interaction modeling.

Oleksandr Tomalak, Aaron S. Meyer, Clarence Wret, Tejin Cai, Richard J. Hill, Kevin S. McFarland2026-04-09⚛️ nucl-ex

Insights into 1-loop corrections to neutrino low-scale type-I seesaw mechanism

This paper demonstrates that while naive application of the Casas-Ibarra parametrization with 1-loop corrections leads to incorrect neutrino oscillation predictions, a modified approach that reabsorbs these corrections into the right-handed neutrino mass matrix yields consistent results, while also establishing that heavy neutral lepton searches are insensitive to such corrections and that the μeγ\mu\to e \gamma decay provides competitive constraints for masses above 100 GeV.

Gennaro Miele, Stefano Morisi, Eduardo Peinado, Kainat Qamar2026-04-09⚛️ hep-ph

An A4 model to accommodate maximal theta23 and maximal delta consistent with mu-tau reflection symmetry

This paper constructs an A4-based flavor symmetry model within the type-I seesaw framework that utilizes mu-tau reflection symmetry to naturally predict maximal atmospheric mixing and a maximal Dirac CP phase, while also successfully accommodating the observed non-maximal deviations in these parameters through a two-parameter numerical analysis consistent with current global neutrino oscillation data.

Rupak Chakrabarty, Chandan Duarah2026-04-09⚛️ hep-ph