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

Higgs Physics with the XFEL Compton γγ\boldsymbol{\gamma\gamma} Collider Concept at s=125\boldsymbol{\sqrt{s}=125} GeV

This paper investigates single Higgs production at a 125 GeV XFEL Compton γγ\gamma\gamma collider, demonstrating that a novel deep learning framework combined with a genetic algorithm can achieve significantly higher sensitivity in signal-background discrimination than traditional methods, thereby enabling precise Higgs sector probing and new physics opportunities complementary to proposed e+e−e^+e^- machines.

Umar Sohail Qureshi, Tim Barklow, Ariel Schwartzman2026-05-19
⚛️ phenomenology

3D Initial-State Dynamics across scales: A Comparative Study of saturation and string-based descriptions

This study compares the longitudinal deposition of conserved quantities in the string-based SMASH and saturation-based McDipper initial condition models across a wide range of collision energies, revealing significant discrepancies in energy and baryon deposition at higher center-of-mass energies despite good agreement at lower energies.

Lucas Constantin, Oscar Garcia-Montero, Niklas Götz, Hannah Elfner2026-05-19
⚛️ lattice

Two-nucleon systems at mπ≈292m_{\pi}\approx292 MeV from lattice QCD

Using lattice QCD with Nf=2+1N_f=2+1 ensembles at a pion mass of approximately 292 MeV, this study determines finite-volume energies of two-nucleon systems in the 3S1^3S_1 and 1S0^1S_0 channels and extracts scattering amplitudes via Lüscher's method and the Non-Perturbative Hamiltonian framework, revealing that both the deuteron and di-neutron channels exhibit virtual state poles with binding energies of 6−3+56^{+5}_{-3} MeV and 11−5+611^{+6}_{-5} MeV, respectively.

Kuan Zhang, Kang Yu, Yiqi Geng, Chuan Liu, Liuming Liu, Peng Sun, Jia-Jun Wu, Ruilin Zhu2026-05-19
⚛️ phenomenology

Constraints on Self-Interacting Fuzzy Dark Matter from the Stellar Kinematics of the Dwarf Galaxy Leo II

This study uses stellar kinematics from the dwarf galaxy Leo II to constrain the two-dimensional parameter space of self-interacting fuzzy dark matter, revealing that attractive (repulsive) self-interactions lead to more concentrated (diffuse) density profiles and establishing 95% confidence lower limits on the particle mass within the range of (1−10)×10−22 eV(1-10)\times10^{-22}\,\mathrm{eV} for interaction strengths up to fa−1≲10−14 GeV−1f_a^{-1}\lesssim 10^{-14}\,\mathrm{GeV}^{-1}.

Yi Zhao, Yu-Ming Yang, Xiao-Jun Bi, Peng-Fei Yin2026-05-19