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.

(2+2)D Collective Model based on a relativistic Boltzmann equation in the Isotropization Time Approximation: CoMBolt-ITA

This paper presents CoMBolt-ITA, a new (2+2)D collective model based on the relativistic Boltzmann equation in the isotropization time approximation that successfully couples pre-equilibrium dynamics with hydrodynamics to simulate quark-gluon plasma evolution, demonstrating strong consistency with standard hydrodynamic and hybrid models for small shear viscosity while revealing significant discrepancies and nontrivial thermalization effects for larger viscosity values.

S. F. Taghavi, S. M. A. Tabatabaee Mehr, F. Taghinavaz2026-03-27⚛️ nucl-th

Novel and Updated Bounds on Flavor-Violating Z Interactions in the Quark Sector

This paper derives updated constraints on flavor-violating ZZ boson couplings to quarks, demonstrating that low-energy flavor experiments currently provide significantly tighter bounds (ranging from O(109)\mathcal{O}(10^{-9}) to O(103)\mathcal{O}(10^{-3})) than existing collider searches and presenting future sensitivity projections.

Fayez Abu-Ajamieh (Indian Institute of Science, Bangalore), Amine Ahriche (University of Sharjah), Suman Kumbhakar (University of Calcutta), Nobuchika Okada (University of Alabama)2026-03-27⚛️ hep-ex

The Cosmic Horizon of Neutrinos

This paper demonstrates that a light ZZ' gauge boson associated with U(1)LμLτU(1)_{L_\mu - L_\tau} symmetry can simultaneously resolve the muon g2g-2 anomaly, alleviate the Hubble tension via ΔNeff\Delta N_{\mathrm{eff}}, and create a "neutrino cosmic horizon" by significantly attenuating high-energy cosmic neutrinos through resonant scattering with the cosmic neutrino background.

James Fardeen, Stefano Profumo, M. Grant Roberts2026-03-27⚛️ hep-ph

Dark Matter and Electroweak Baryogenesis with Spontaneous $CP$ Violation in the Early Universe

This paper proposes an extended inelastic Higgs-portal complex singlet model that simultaneously explains dark matter, the Galactic Center gamma-ray excess, and the baryon asymmetry of the universe through a two-step electroweak phase transition featuring spontaneous CP violation, while predicting gravitational wave signals detectable by future space-based observatories.

Subhojit Roy2026-03-27⚛️ hep-ex

OmniLearned: A Foundation Model Framework for All Tasks Involving Jet Physics

This paper introduces OmniLearned, a major upgrade to the OmniLearn foundation model framework for jet physics that leverages a billion-jet training dataset and improved architecture to achieve state-of-the-art performance in top-quark tagging, b-tagging, and anomaly detection, thereby significantly enhancing the discovery potential of collider experiments.

Wahid Bhimji, Chris Harris, Vinicius Mikuni, Benjamin Nachman2026-03-27⚛️ hep-ph