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

Phenomenology of Leptophilic Gauge Interactions at Future e+e−e^+e^- Colliders

This paper presents an observable-driven study demonstrating that angular observables, particularly the forward-backward asymmetry and a newly proposed interference-normalized quantity, offer robust sensitivity to leptophilic gauge interactions mediated by a ZℓZ_\ell boson at future e+e−e^+e^- colliders, even in off-shell regimes where interference effects dominate over resonant enhancements. The leptophilic gauge boson is not restricted to electrons and muons alone, but more generally couples to leptons, depending on the specific model.

S. O. Kara2026-07-09✓ Author reviewed ⓘ
⚛️ high-energy experiments

Collins effect in pion-in-jet production in polarized $pp$ and $ep$ collisions

This paper employs a hybrid transverse momentum dependent approach to confirm the universality of the Collins function by successfully describing STAR proton-proton collision data and subsequently provides leading-order predictions for Electron-Ion Collider kinematics, demonstrating that quasireal photon exchange effects, while sizable, do not hinder the clear extraction of the transversity distribution and its sea-quark component in lepton-proton collisions.

Carlo Flore, Umberto D'Alesio, Marco Zaccheddu2026-07-09
⚛️ phenomenology

Weakly supervised machine learning for model-agnostic searches of new phenomena in the γ\gamma-ray sky

This paper demonstrates that weakly supervised machine learning offers a model-agnostic strategy for identifying anomalous γ\gamma-ray sources and new phenomena, such as dark matter subhalos or axion-photon oscillations, by training classifiers on samples with varying signal admixtures rather than relying on fully labeled signal models.

Michael Krämer, Silvia Manconi, Kathrin Nippel2026-07-09
⚛️ phenomenology

Algebraic Structure of Three-Flavor Neutrino Oscillations in Constant-Density Matter: Cayley--Hamilton Evolution, DMP Resummation, and Closed-Form Uncertainty Propagation

This paper presents a comprehensive algebraic framework for three-flavor neutrino oscillations in constant-density matter by deriving exact closed-form evolution operators via the Cayley--Hamilton theorem, validating the high-precision DMP approximation as a resummation that resolves near-degeneracies, and providing analytic Jacobians for robust uncertainty propagation in global fits.

Aaryan Chaulagain, Anju Dhakal, Daya Nidhi Chhatkuli2026-07-09
⚛️ phenomenology

Reappraisal of the Constraints on Heavy Axion-like Particles from Gamma-Ray Bursts

This paper reassesses constraints on heavy axion-like particles (ALPs) using gamma-ray bursts, demonstrating that while ALP production is less efficient than previously thought, the resulting secondary fireball from ALP decay offers a novel pathway to probe O(100 MeV)\mathcal{O}(100~\mathrm{MeV})-scale ALPs via isotropic X-ray or MeV gamma-ray emissions.

Christopher V. Cappiello, Saurav Das, P. S. Bhupal Dev, Takuya Okawa, Soebur Razzaque2026-07-09