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.

⚛️ nuclear theory

Hadronic J/ψJ/ψ Regeneration in Pb+Pb Collisions

This study demonstrates that hadronic regeneration of J/ψJ/\psi mesons from DD-meson collisions during the hadronic break-up phase in Pb+Pb collisions significantly contributes to the final observed yields, implying that regeneration must be accounted for in models and making it difficult to distinguish between regeneration occurring at hadronization versus during final-state interactions.

Joseph Dominicus Lap, Berndt Müller2026-02-25
⚛️ high-energy experiments

Characterizing Dark Bosons at Chiral Belle

This paper investigates how a polarized electron beam at the proposed "Chiral Belle" upgrade of Belle II can distinguish the spin and Lorentz structure of invisibly decaying dark bosons by analyzing the polarization dependence of the mono-photon production channel (e+eγ+invisiblee^+ e^- \rightarrow \gamma + \text{invisible}).

Carlos Henrique de Lima, David McKeen, Afif Omar, Douglas Tuckler2026-02-25
⚛️ nuclear theory

Rapidity-Dependent Spin Decomposition of the Nucleon

This paper establishes that the two-dimensional Fourier transform of generalized parton distributions encodes distinct impact-parameter densities and parton-nucleon correlations depending on skewness, leading to universal rapidity-modified angular momentum identities and providing leading-twist GPD predictions validated by lattice data and applicable to future experiments at Jefferson Lab and the Electron Ion Collider.

Florian Hechenberger, Kiminad A. Mamo, Ismail Zahed2026-02-25
⚛️ high-energy experiments

Rare few-body decays of the Standard Model Higgs boson

This paper surveys approximately 70 rare and exclusive few-body Standard Model Higgs boson decays with branching fractions below 10510^{-5}, providing theoretical predictions, current experimental limits, and HL-LHC projections—including 20 newly computed channels—to guide future research in constraining couplings, probing flavor-changing processes, and estimating backgrounds for exotic physics.

David d'Enterria, Van Dung Le2026-02-25
⚛️ phenomenology

Using Strong Lensing to Detect Subhalos with Steep Inner Density Profiles

This study demonstrates that strong gravitational lensing observations can detect dark matter subhalos with steep inner density profiles at masses over an order of magnitude lower than standard NFW subhalos, a capability that remains robust even when accounting for complex lens galaxy mass models, thereby offering a powerful tool for distinguishing between Cold Dark Matter and alternative dark matter theories.

Kassidy E. Kollmann, James W. Nightingale, Mariangela Lisanti, Andrew Robertson, Oren Slone2026-02-25