2585 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 updated experimental constraints on the gravitational inverse-square law at short ranges, offering a consistent formalism to compare diverse tabletop and high-energy collider results with theoretical extensions of general relativity, including extra-dimensional models.
This paper proposes a significantly enhanced detection scheme for meV-scale QCD axions and dark photons using highly excited cyclotron states of a trapped electron within an open-endcap trap, achieving background-free sensitivity to the predicted post-inflationary QCD axion mass range (0.1–2.3 meV) and dark photon kinetic mixing parameters as low as through optimized experimental parameters and dielectric-enhanced cavities.
This paper proposes a hybrid neural simulation-based inference approach to constrain the Higgs trilinear self-coupling and other SMEFT operators using off-shell Higgs production at the High-Luminosity LHC, achieving near-theoretical-optimal sensitivity by combining matrix-element-enhanced training with classification-based background estimation.
This paper introduces OASIS, a novel segmentation-regression framework that employs a weighted loss function to prioritize overlapping regions during training, significantly improving the intensity and topological reconstruction of faint, obscured electron tracks in the challenging context of the MIGDAL experiment.
The CMS collaboration presents a search for nearly mass-degenerate Higgsinos using 137 fb of 13 TeV proton-proton collision data, employing final states with low-momentum lepton-track pairs to probe mass differences as small as 1.5 GeV and exclude Higgsino masses up to 115 GeV.
This paper benchmarks the flavor-physics particle identification performance of the proposed CLD and IDEA detectors at the FCC-ee, demonstrating that while silicon tracker-based timing and energy-deposit measurements effectively suppress backgrounds for low-momentum hadrons, accessing drift-chamber cluster counts is essential for high-momentum light-quark jet tagging, with optimal results requiring timing resolutions of 30ps or better.
The ALPS II experiment at DESY conducted its first science campaign from February to May 2024, achieving a 20-fold improvement in sensitivity limits for axion-like particles without finding evidence of their existence, while demonstrating stable operation and preparing for future upgrades to further enhance detection capabilities.
This review article summarizes recent advancements in muon beam technology and high-precision muonium physics, highlighting their applications in fundamental constant measurements, searches for new physics beyond the Standard Model, and materials science research.
This paper proposes a framework where Yukawa hierarchies emerge from powers of anarchic spurions in higher and flavor representations via progressive rank lifting, offering testable predictions for flavor-changing neutral currents and stochastic gravitational-wave backgrounds.
This paper proposes a theoretically clean and experimentally simple "one-point charge-correlator" probe for measuring the Sivers effect in back-to-back deep-inelastic scattering using only charged track signs and directions, which achieves factorization without relying on non-perturbative fragmentation functions and provides high-precision resummed predictions for future Electron-Ion Collider experiments.