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

CGC-py: A Monte Carlo Event Generator for Gluon Saturation Physics

This paper introduces CGC-py, a Monte Carlo event generator that integrates Color Glass Condensate physics with parton branching and hadronization to consistently model deep-inelastic scattering, validating its predictions against experimental data and demonstrating its utility for probing gluon saturation effects in future electron-ion collider measurements.

Haowu Duan, Cong Yi, Si-Wei Dai, Shu-Yi Wei, Wenbin Zhao, Liang Zheng2026-09-04
⚛️ nuclear theory

A Practical Partial-Wave Method for Identifying Unstable Light Nucleus Resonances in Heavy-Ion Collisions

This paper proposes a practical partial-wave method based on the Lednický–Lyuboshitz framework, which incorporates experimental phase-shift data to extract resonance signals of unstable light nuclei from two-particle correlation functions in heavy-ion collisions, successfully demonstrating its application to the 4^4Li and 5^5Li systems using STAR experimental data.

Junlin Wu, Hongchan Li, Ke Mi, Yaping Wang, Guannan Xie2026-09-04
⚛️ nuclear theory

Ultra-compact twin stars with hybrid equations of state from bosonic dark matter

This study demonstrates that incorporating self-interacting bosonic dark matter into hybrid equations of state with first-order phase transitions to quark matter stabilizes mass-radius configurations, eliminates the instability gap between hadronic and hybrid branches to enable continuous twin star sequences, and gives rise to two distinct classes of ultra-compact objects that can be distinguished by their surface redshifts and dark matter content.

Ishfaq Ahmad Rather, Sarah Louisa Pitz, Jürgen Schaffner-Bielich2026-09-04
⚛️ phenomenology

Exploring Extended Higgs Dynamics via Higgsstrahlung at FCC-ee

This paper demonstrates that the Future Circular Electron-Positron Collider (FCC-ee) will be able to precisely constrain Beyond-the-Standard-Model physics in the Two-Higgs-Doublet Model near the alignment limit through next-to-leading order analysis of Higgsstrahlung processes at 240 GeV, thereby revealing its broader potential to indirectly uncover new electroweak-scale physics.

Anisha, Francisco Arco, Stefano Di Noi, Christoph Englert, Margarete Mühlleitner2026-09-04
⚛️ lattice

Lattice QCD calculation of the pion-nucleon coupling gˉ0\bar{g}_0 induced by the QCD Θ\Theta-term

This paper presents a lattice QCD calculation of the CP-violating pion-nucleon coupling gˉ0\bar{g}_0 induced by the QCD Θ\Theta-term using 2+1+1-flavor HISQ ensembles, demonstrating that while direct extraction is noisy due to NπN\pi excited state contamination, applying the axial Ward identity and chiral perturbation theory yields a precise result of gˉ0/(2Fπ)=17.4(1.9)×10−3 Θ‾\bar{g}_0/(2F_\pi)=17.4(1.9)\times 10^{-3} \,{\overline{\Theta}}.

Fangcheng He, Tanmoy Bhattacharya, Rajan Gupta, Emanuele Mereghetti2026-09-04
⚛️ lattice

First Two-Hadron Form Factor from QCD

This paper presents the first QCD determination of an energy-dependent two-hadron form factor by combining lattice QCD calculations of finite-volume electromagnetic matrix elements with a finite-volume formalism to constrain the infinite-volume forward π+π++γ→π+π+\pi^+\pi^+ + \gamma\to\pi^+\pi^+ amplitude, thereby validating the approach for studying the electroweak structure of resonances and multi-hadron states.

Felipe G. Ortega-Gama, Raúl A. Briceño, Ivan M. Burbano, Robert G. Edwards2026-09-04
⚛️ high-energy experiments

Inelastic Signatures of Electroweak Dark Matter

This paper proposes a minimal electroweak dark matter model involving coupled Majorana and Dirac multiplets that explains the high-energy nuclear recoil events observed by the LUX-ZEPLIN collaboration through inelastic scattering with specific mass splittings, while simultaneously predicting correlated elastic spin-independent signals for various multiplet representations.

Juri Smirnov, Spencer Griffith, John F. Beacom2026-09-04