⚛️ Category

hep-ph

3277 papers

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.

Classically Forbidden Signatures of Quantum Coherence in the Mesoscopic Lipkin-Meshkov-Glick Model

This paper establishes strict quantitative conditions and demonstrates via simulation that a mesoscopic spinor Bose-Einstein condensate of approximately 370 spins near the Lipkin-Meshkov-Glick critical point can exhibit classically forbidden temporal correlations, specifically through an exponentially suppressed Landau-Zener error rate and a Leggett-Garg inequality violation (K_3 ~ 1.32), both robust against realistic dephasing due to emergent collective symmetry and dynamical phase alignment.

Stavros Mouslopoulos2026-04-22⚛️ quant-ph

The influence of the inverse Compton effect on the transverse momentum spectra of particles produced in pp collisions at \sqrt{s}=14 TeV

This study utilizes PYTHIA simulations of proton-proton collisions at 14 TeV to demonstrate that including inverse Compton scattering events in quark-gluon scattering analyses results in a moderate, constant increase in particle yield without significantly broadening transverse momentum spectra, thereby validating pp collisions as a reliable baseline for investigating energy redistribution in dense QCD media.

M. Alizada, M. Suleymanov2026-04-22⚛️ hep-ph

Tree Amplitudes with Charged Matter in Pure Gauge Theory

This paper introduces `fermionic_amplitudes.m`, a Mathematica package that computes tree-level scattering amplitudes for arbitrary numbers of gauge bosons and massless fermions in pure non-supersymmetric gauge theories by expressing distinct-flavour amplitudes as linear combinations of single-flavour components derived from supersymmetric Yang-Mills theory, while providing explicit numeric colour tensors for cross-section calculations.

Jacob L. Bourjaily, Michael Plesser, Philip Velie2026-04-22⚛️ hep-th

The KM3NeT event: a primordial high energy neutrino?

This paper proposes that the ultrahigh energy neutrino event detected by KM3NeT could originate from the decay or annihilation of long-lived primordial relics around the recombination era, a scenario that resolves tensions with null results from other experiments by producing a sharp spectral feature without an associated gamma-ray flux and potentially leaving a detectable imprint on the Cosmic Microwave Background.

Nicolas Grimbaum Yamamoto, Thomas Hambye2026-04-22🔭 astro-ph

A new approach to long-lived particle detection at hadron colliders: the DELIGHT-SHIELD\textsf{DELIGHT-SHIELD} concept

This paper proposes the DELIGHT-SHIELD\textsf{DELIGHT-SHIELD} concept, a novel detector design for the 100 TeV Future Circular Collider that replaces inner tracking with a multi-layered composite shield to suppress Standard Model backgrounds by up to seven orders of magnitude, thereby enabling unprecedented sensitivity to long-lived particles with branching ratios as low as O(10−9)\mathcal{O}(10^{-9}).

Biplob Bhattacherjee, Arnav Chauhan, Swagata Mukherjee, Rhitaja Sengupta, Anand Sharma2026-04-22⚛️ hep-ph

Mass spectrum, magnetic moments and Regge trajectories of Ωccb\Omega_{ccb} and Ωcbb\Omega_{cbb} baryons in the nonrelativistic quark--diquark model

This paper employs a nonrelativistic quark-diquark model to predict the mass spectra, magnetic moments, and Regge trajectories of the triply heavy Ωccb\Omega_{ccb} and Ωcbb\Omega_{cbb} baryons, establishing a consistent link to experimental BcB_c meson data and providing reliable theoretical benchmarks for future searches at LHCb.

Öznur Çakır, Halil Mutuk2026-04-22⚛️ hep-lat

Fine-Tuning Small Reasoning Models for Quantum Field Theory

This paper presents the first fine-tuning study of small 7B-parameter reasoning models for Quantum Field Theory, utilizing a novel data generation pipeline to create synthetic and human-adapted training data, and evaluates the effectiveness of Reinforcement Learning and Supervised Fine-Tuning in enhancing domain-specific reasoning while analyzing the evolution of reasoning errors.

Nathaniel S. Woodward, Zhiqi Gao, Yurii Kvasiuk, Kendrick M. Smith, Frederic Sala, Moritz Münchmeyer2026-04-22⚛️ hep-ph