⚛️ Category

hep-ph

5447 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.

⚛️ phenomenology

Effective Phantom Dark Energy: What Cosmological Reconstruction Does and Does Not Imply

This paper clarifies that observational evidence for effective phantom dark energy, derived from background-level reconstructions within standard cosmological assumptions, does not necessarily imply the existence of fundamental phantom fields, microscopic instabilities, or a catastrophic cosmic future, but rather can arise from various physical mechanisms without violating fundamental energy conditions.

Swagat S. Mishra2026-05-27✓ Author reviewed ⓘ
⚛️ nuclear theory

Probing the onset of hydrodynamization in peripheral p-Pb collisions at sNN=\sqrt{s_{NN}} = 5.02 TeV

Using the JETSCAPE event generator to simulate peripheral p-Pb collisions at 5.02 TeV, this study estimates the minimum size for Quark-Gluon Plasma hydrodynamization by analyzing elliptic flow fluctuations, which indicate a breakdown of fluid behavior at a charged-particle multiplicity of approximately dN/dy≈14dN/dy \approx 14.

Nikhil Hatwar, Sadhana Dash, Basanta Kumar Nandi2026-05-26
⚛️ phenomenology

Renormalization of effective field theories via on-shell methods: the case of axion-like particles

This paper derives the renormalization group equations for the most general axion-like particle effective field theory using on-shell and unitarity-based methods, demonstrating that this approach simplifies calculations and elegantly reveals connections between CP-dual operators compared to standard Feynman diagram techniques.

Luigi C. Bresciani, Giacomo Brunello, Gabriele Levati, Pierpaolo Mastrolia, Paride Paradisi2026-05-26
⚛️ high-energy experiments

Exploring the lifetime frontier with a beam-dump experiment at CiADS

This paper proposes a cost-effective beam-dump experiment at the CiADS facility to search for long-lived particles, specifically demonstrating that a 5-year run could probe currently unexcluded parameter spaces for dark photons with masses around 100 MeV and kinetic mixing between 10−910^{-9} and 10−810^{-8}, while also noting similar potential at the nearby HIAF.

Liangwen Chen, Mingxuan Du, Zhiyu Sun, Zeren Simon Wang, Fang Xie, Ju-Jun Xie, Lei Yang, Pei Yu, Yu Zhang2026-05-26
⚛️ high-energy experiments

Novel method for determining the light quark mass ratio using η′→ηππ\eta'\to\eta \pi\pi decays

This paper proposes and demonstrates a novel method for extracting the light quark mass ratio parameter QQ from η′→ηππ\eta'\to\eta \pi\pi decays by mapping Dalitz plots to a unit disk to isolate symmetry breaking effects, yielding a preliminary result of Q=22.5±1.0Q=22.5\pm1.0 consistent with previous determinations.

Adolfo Guevara, Feng-Kun Guo, Hao-Jie Jing2026-05-26
⚛️ phenomenology

Cosmic-ray boosted inelastic dark matter from neutrino-emitting active galactic nuclei

This paper proposes that cosmic-ray boosted inelastic dark matter from neutrino-emitting active galactic nuclei like NGC 1068 and TXS 0506+056 can be detected by experiments such as Super-K and XENONnT, offering a novel way to probe light dark matter models that reproduce the observed relic abundance but are otherwise inaccessible.

R. Andrew Gustafson, Gonzalo Herrera, Mainak Mukhopadhyay, Kohta Murase, Ian M. Shoemaker2026-05-26
⚛️ nuclear theory

Relativistic Dispersion Spectra across Lorentz boosted frames: Spurious modes and the enigma of causality

This paper introduces a general framework for deriving linearized dispersion spectra in Lorentz boosted frames using only local rest-frame data, revealing the emergence of causality-violating "spurious modes" and establishing a direct link between mode conservation and the causality of relativistic fluid theories.

Sayantani Bhattacharyya, Sukanya Mitra, Shuvayu Roy, Rajeev Singh2026-05-26