2507 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 proposes a novel laboratory strategy to detect axion-like particles by utilizing third-harmonic generation from colliding high-intensity laser beams, which enables resonant enhancement of the axion-photon conversion rate through beam angle tuning to probe previously unexplored regions of axion parameter space.
This paper identifies two late-time evolutionary regimes for accreting axion clouds around compact objects—a collapse-driven "Bosenova" and a saturation regime—and demonstrates that the latter produces distinct, stable spectral lines that can be used to probe the global structure of the axion potential and its ultraviolet completion through terrestrial detection.
This paper demonstrates that combining the recursive soft drop technique from jet substructure physics with the CATHODE anomaly detection method enables the simultaneous detection of physics beyond the Standard Model signals with an arbitrary number of jets, overcoming previous limitations that restricted such searches to two-jet resonances.
The paper introduces "Panda Diplomacy," a generalizable point cloud self-distillation framework that enables foundation models to be pre-trained across diverse particle detector modalities (LArTPC, collider TPC, and water Cherenkov) with minimal architectural changes, achieving state-of-the-art performance in particle reconstruction and identification using orders of magnitude fewer labeled events than specialized baselines.
This paper investigates the inclusive lifetimes of and baryons using the homogeneous bag model and nonrelativistic quark model, demonstrating that spin-zero and spin-one diquark mixing significantly reduces the lifetimes of neutral states and that the lifetime extrema occur at mixed angles rather than in pure spin configurations.
This paper evaluates non-negligible QED nuclear medium effects on various scattering processes at the future Electron-ion collider in China (EicC), presenting first-order opacity expansion calculations and the first computations for charged-current deep inelastic and polarized scattering across heavy and light nuclei to highlight their importance for extracting nucleon structure.
This paper demonstrates that the extraction of nuclear surface diffuseness from relativistic heavy ion collisions is fundamentally limited by strong geometric degeneracies between the surface parameter and intrinsic nuclear deformations, though multiparticle triangular correlations offer a more independent pathway to constrain these properties.
This paper presents and validates a machine-learning-based Boosted Decision Tree algorithm for the CLAS12 experiment that effectively identifies electrons and positrons while significantly reducing charged-pion contamination, achieving over 90% lepton retention in simulated samples and demonstrating reliability on experimental data.
Using 138 fb of proton-proton collision data at = 13 TeV collected by the CMS experiment, this study presents the first constraint on the Higgs boson width derived from signal-background interference in the diphoton final state, establishing a 95% confidence level upper limit of 92 MeV.
This paper details the serial production, stringent quality control procedures, and construction of the small-diameter Muon Drift Tube (sMDT) chambers at MPI Munich, which are designed to replace the inner barrel MDTs in the ATLAS Muon Spectrometer to enhance performance for the High-Luminosity LHC upgrade.