Hep-Ex explores the fascinating intersection where particle physics meets experimental reality. This field investigates how scientists build massive detectors and accelerate particles to test the fundamental laws of nature, turning abstract theories into measurable data. It is the rigorous process of searching for new particles or forces that could reshape our understanding of the universe, often requiring years of collaboration and engineering.

At Gist.Science, we ensure these discoveries become accessible to everyone. We process every new preprint in this category directly from arXiv, generating both plain-language explanations for curious readers and detailed technical summaries for specialists. Our goal is to bridge the gap between complex experimental results and public understanding without losing scientific nuance.

Below are the latest papers in Hep-Ex, freshly summarized and ready for you to explore.

Probing the electron Yukawa coupling via resonant Higgs boson production at FCC-ee via e+eHWWe^+e^- \to H \to WW^* in lepton-plus-jets final states

This study demonstrates that searching for resonant Higgs boson production via the e+eHWWe^+e^- \to H \to WW^* process at the FCC-ee can achieve a 95% confidence level upper limit on the electron Yukawa coupling modifier of κe1.35\kappa_e \lesssim 1.35, providing the most stringent constraint to date in simulation-based studies.

Apranik Fatehi, Reza Jafari Seyedabad, Amir Amiri, Kazem Azizi, David d'Enterria, Louis Portales, Michele Selvaggi2026-04-28⚛️ hep-ph

Measurement of jet photoproduction in ultra-peripheral Pb+Pb collisions without nuclear breakup at sNN=5.02\sqrt{s_\mathrm{NN}} = 5.02 TeV with the ATLAS detector

Using 2018 ATLAS data from ultra-peripheral Pb+Pb collisions at sNN=5.02\sqrt{s_\mathrm{NN}} = 5.02 TeV, this paper presents the first measurement of γ+I ⁣ ⁣Pjets\gamma+I\!\!P\rightarrow\mathrm{jets} cross-sections in nuclear collisions by statistically separating photon--pomeron, photon--photon, and peripheral photonuclear processes in non-breakup events via a template fit of rapidity gaps, while also confirming that such events select a more peripheral collision class.

ATLAS Collaboration2026-04-28⚛️ nucl-ex

Search for associated production of a Higgs boson and two vector bosons via vector boson scattering at s\sqrt{s} = 13 TeV

Using 138 fb1^{-1} of CMS data at s\sqrt{s} = 13 TeV, this paper presents a search for Higgs boson production in association with two vector bosons via vector boson scattering, establishing new constraints on the κVV\kappa_\mathrm{VV} coupling modifier and the κ2W\kappa_\mathrm{2W}-κ2Z\kappa_\mathrm{2Z} plane.

CMS Collaboration2026-04-28⚛️ hep-ex

Observation of the electromagnetic radiative decays of the \boldmath{Λ(1520)Λ(1520)} and \boldmath{Λ(1670)Λ(1670)} to \boldmath{γΣ0γΣ^0}

Using a large sample of J/ψJ/\psi events collected with the BESIII detector, this study reports the first observation of the electromagnetic radiative decays Λ(1520)γΣ0\Lambda(1520) \to \gamma\Sigma^0 and Λ(1670)γΣ0\Lambda(1670) \to \gamma\Sigma^0, measuring their branching fractions and revealing that the Λ(1520)\Lambda(1520) decay width challenges predictions from constituent quark and algebraic models.

BESIII Collaboration, M. Ablikim, M. N. Achasov, P. Adlarson, X. C. Ai, R. Aliberti, A. Amoroso, Q. An, Y. Bai, O. Bakina, Y. Ban, H. -R. Bao, V. Batozskaya, K. Begzsuren, N. Berger, M. Berlowski, M. (…)2026-04-27⚛️ hep-ex

Boosted decision tree reweighting of simulated neutrino interactions for O(1)O(1) GeV neutrino cross section measurements

This paper presents a generic method using Boosted Decision Trees to multi-dimensionally reweight existing neutrino Monte Carlo simulations to match a target model, allowing for efficient reuse of legacy data without the need for new event generation.

Z. Lin (The MINERvA Collaboration), S. Akhter (The MINERvA Collaboration), Z. Ahmad Dar (The MINERvA Collaboration), N. S. Alex (The MINERvA Collaboration), M. Betancourt (The MINERvA Collaboration) (…)2026-04-27⚛️ hep-ex