2503 papers
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.
This paper presents the first global determination of fragmentation functions for the exotic-hadron candidate using Belle collaboration data, revealing that its high-energy behavior is dominated by an configuration, which suggests a transition from its low-energy tetraquark or molecular description to a quark-antiquark state.
This paper reports the first observation of light hypernuclei ( and ) in Ag+Ag collisions at = 2.55 GeV, revealing a yield that exceeds and a lifetime that deviates significantly from the free hyperon, thereby providing high-precision data to consolidate world measurements.
Using the full Run-2 dataset of proton-proton collisions at 13 TeV, the ATLAS collaboration reports the first evidence of simultaneous production with a significance of 4.4, observing eight events in the fully leptonic final state with a measured fiducial cross-section consistent with Standard Model predictions.
This paper develops a theoretical framework for generalized collider detectors that measure energy powers on specific hadron subsets by introducing universal nonperturbative "detector functions" to bridge infrared hadronic measurements with ultraviolet partonic calculations, thereby enabling the computation of multi-point correlation functions, QCD factorization, and the analysis of nonperturbative power corrections.
This paper introduces PSICHE, a novel probabilistic and hierarchical clustering algorithm that dynamically learns variable jet sizes and substructure in both space and time while incorporating experimental uncertainties, offering a self-consistent and computationally tractable solution for jet reconstruction in particle physics.
This paper demonstrates that top-quark pair production measurements at the FCC-ee, utilizing matrix-element-based discriminants and IDEA detector simulations, can constrain heavy new physics scales up to 30 TeV in single-operator fits and up to 5 TeV in global fits, offering complementary sensitivity to High-Luminosity LHC prospects.
This paper proposes a stable dark matter model based on the topological defects arising from the symmetry breaking of SU(3) to SO(3), which predicts specific mass ratios for a dark octet, satisfies cosmological and astrophysical constraints via co-annihilation and self-interactions, and offers testable signatures through future collider, gravitational wave, and radio observations.
This paper presents a feasibility study demonstrating how recent advances in quantum-sensing technologies can enable stringent comparisons between theory and experiment for contact-free transitions in muonic atoms, thereby probing new physics in spin-independent muon-proton interactions and disentangling fundamental constants from beyond-Standard-Model searches.
This paper provides a comprehensive review of glueballs—colour-singlet bound states of gluons predicted by Quantum Chromodynamics—covering their theoretical properties across various models, the complexities of mixing with quark-antiquark states in full QCD, decay mechanisms, experimental production, and the current status of candidate identification in different quantum number sectors.
This paper reviews recent Drell-Yan measurements of transverse-momentum dependent distributions (TMDs) and discusses future prospects for accessing generalized parton distributions (GPDs) via exclusive pion-induced Drell-Yan processes at J-PARC to further explore nucleon spin and test TMD/GPD universality.