1402 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.
Using cosmic ray muons in the gadolinium-loaded Super-Kamiokande detector, this study presents the first threshold-free measurement of neutron multiplicity in muon capture on oxygen nuclei, determining the probabilities for emitting zero to three neutrons with a detection efficiency of approximately 50%.
Using 1,338.6 live days of data from a one-ton prototype detector at the 2,400-meter-deep China Jinping Underground Laboratory, researchers measured a TeV-scale underground muon flux that deviates by approximately 40% from leading hadronic interaction models, offering new constraints on air shower physics and suggesting a lighter cosmic-ray mass composition in the tens of TeV to PeV energy range.
This paper presents the design and implementation of a fixed-frequency superconducting lumped-element resonator operating near 250 kHz with a 1-liter inductor volume and an unprecedented unloaded quality factor of approximately , marking a significant advancement for low-mass axion dark matter searches.
To address the data volume challenges of LHCb's Run 3, this paper introduces the novel Inclusive Multivariate Isolation (IMI) algorithm, which reduces event size by 45% while maintaining 99% signal efficiency and superior background rejection compared to traditional methods.
This paper presents the development and testing of a cost-effective, meter-scale modular cosmic ray telescope utilizing a novel scintillator-fiber hybrid design that achieves millimeter-level muon tracking with better than 2 mm spatial resolution and approximately 85% detection efficiency while significantly reducing the number of readout electronic channels.
This paper presents 3D numerical simulations of an unstable Ellis-Bronnikov wormhole collapsing under controlled perturbations, revealing a violent "phantom bounce" that emits gravitational waves detectable by future observatories but currently below Advanced LIGO's sensitivity for moderate sources.
This paper proposes a systematic framework using maximum-entropy reweighting and precision moments of energy flow polynomials to upgrade parton-shower event samples with higher-accuracy theoretical constraints, thereby restoring physical behavior and improving predictions across a broad range of observables while preserving full event-level exclusivity.
This paper refines theoretical predictions for light-by-light scattering by improving two-loop helicity amplitudes with asymptotic expansions and Coulomb resummation, providing state-of-the-art Standard Model cross-section calculations and a new Monte Carlo event generator named LbLatNLO.
This paper presents the design, construction, and beam test results of a large-area scintillator-based chamber for the ALICE 3 muon identifier, demonstrating over 99% muon detection efficiency and effective pion rejection via a machine learning algorithm.
This paper presents a model for the curvature response of the CDF II drift chamber, constrained by cosmic-ray data and W boson mass measurement results, to demonstrate the robustness of its momentum calibration and provide a framework for analyzing precision magnetic trackers.