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.

Machine Learning-Based Cluster Classification to Suppress Background in a Prototype RPC Detector

This paper demonstrates that machine learning classifiers, particularly XGBoost, effectively suppress background hits in low-resistive Resistive Plate Chamber (RPC) prototypes by utilizing fifteen cluster-level descriptors to distinguish genuine signals from secondary hits, thereby improving track reconstruction efficiency in self-triggering environments.

Souvik Chattopadhay, Zubayer Ahammed2026-04-01⚛️ hep-ex

A Determination of the Top Mass from a Global PDF Analysis

This paper presents an indirect determination of the top-quark pole mass as 172.80±0.26172.80 \pm 0.26 GeV by performing a global analysis of parton distribution functions within the NNPDF framework, which incorporates high-precision QCD and electroweak corrections, toponium contributions, and lattice constraints on αs\alpha_s while refitting PDFs to properly correlate uncertainties across various ATLAS and CMS measurements.

Richard D. Ball, Jaco ter Hoeve, Roy Stegeman2026-04-01⚛️ hep-ex

Higgs Boson Spookiness: Probing Quantum Nonlocality with Spacetime-Resolved Hτ+τH\rightarrow\tau^+\tau^- Decays

This paper proposes that a future precision $ee$ Higgs factory could perform the first spacetime-resolved test of quantum nonlocality in Higgs boson decays by measuring spin correlations between spacelike-separated τ\tau lepton decays, thereby enabling the exclusion of superluminal entanglement signaling theories.

Lawrence Lee, John Lawless, Caroline Riggall2026-04-01⚛️ hep-ex

Dark photon and U(1)BL_{B-L} gauge boson from dark Higgs boson decays at FASER and SHiP

This paper investigates the sensitivity of the FASER and SHiP experiments to dark photons and U(1)BL_{B-L} gauge bosons produced via dark Higgs boson decays, incorporating new single-boson production channels, deriving constraints from current FASER data, and projecting future discovery potential for these models including those with freeze-in sterile neutrino dark matter.

Takeshi Araki, Kento Asai, Yohei Nakashima, Osamu Seto, Takashi Shimomura, Yoshiki Uchida2026-04-01⚛️ hep-ex

Comment on "Lattice QCD constraints on the critical point from an improved precision equation of state"

This paper critiques a recent lattice QCD study that claims to exclude a QCD critical endpoint below μB450\mu_B \approx 450 MeV, arguing that the entropy-contour method used fails to directly probe critical singularities and therefore cannot provide model-independent constraints on the critical point's location.

Roy A. Lacey (Department of Chemistry, Stony Brook University, Stony Brook, NY, USA)2026-04-01⚛️ nucl-ex