1467 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 critiques a recent study (arXiv:2507.07180) by arguing that its proposed ad-hoc symmetrization of Dirac neutrino amplitudes lacks physical justification and incorrectly violates lepton number conservation within the Standard Model.
This paper proposes using the one-point energy correlator (OPEC) in transversely polarized proton-proton collisions as a novel, infrared-and-collinear safe method to probe the nucleon's transversity distribution with a clean angular asymmetry over a wider kinematic range than traditional hadron transverse momentum measurements.
Using 13 TeV proton-proton collision data from the LHCb experiment, researchers measured the branching fraction of the decay with twice the precision of previous results, finding it consistent with Standard Model predictions and providing a stringent test of lepton flavour universality in transitions.
This paper demonstrates that a minimally reconfigured version of CERN's existing NA62 experiment, operating in a future ECN3 beam-dump facility with an optimized geometric setup, can achieve highly competitive sensitivity for detecting feebly interacting particles in the MeV to GeV mass range immediately upon beam availability.
The paper proposes DMRadio-Core, a novel experimental design utilizing a segmented solenoid and external LC resonators to significantly reduce the required magnetic energy while maintaining sensitivity, thereby enabling a near-term search for GUT-scale QCD axions in the 30–200 MHz range with a scalable path to lower frequencies.
This paper presents two ATLAS searches for massive, long-lived particles decaying into displaced vertices using Run 2 missing transverse energy and Run 3 muon triggers, introducing novel reconstruction and trigger techniques to set limits on various Beyond the Standard Model scenarios including Higgs Portal, SUSY, and axino models.
This paper presents LHCb measurements of the branching fraction for the decay and form factor parameters for the decay, which serve as powerful probes for testing the Standard Model and searching for New Physics.
The ATLAS Collaboration reports a significant excess of top-antitop events near their production threshold in 13 TeV proton-proton collisions, a finding consistent with the long-hypothesized formation of top-antitop quasi-bound states.
This paper presents a theorist's perspective on utilizing various non-leptonic and rare B meson decays as probes for CP violation at the Future Circular Collider (FCC) in the post-HL-LHC and Belle II era.
This paper presents an updated analysis of the long-standing puzzle by incorporating recent Belle II measurements of CP asymmetries in the decay, offering new insights into potential sources of CP violation beyond the Standard Model.