1387 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 a comprehensive review of an algebraic light-front model that provides a unified, symmetry-consistent description of the structure of pseudoscalar mesons across light, heavy-light, and heavy-heavy quark regimes, demonstrating how increasing quark mass drives a transition from broad, asymmetric momentum distributions to compact, symmetric configurations.
This paper presents the physics reach and design of the approved SND@LHC upgrade for the High-Luminosity LHC's Run 4, demonstrating that a specific installation scenario involving a 40 cm vertical and 30 cm horizontal shift increases the total neutrino interaction rate by a factor of five compared to alternative configurations.
This paper investigates how -boson exchange and four-fermion operators influence lepton dipole moment constraints derived from asymmetry measurements, demonstrating that while these effects are small, they are crucial for precision studies and that specific loop-level observables could enable the determination of the anomalous magnetic moment even without a polarized electron beam.
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 utilizes ternary plots to analyze the time evolution of flavor compositions in supernova neutrino flux models, demonstrating that normal and inverted neutrino mass orderings occupy distinct regions in ternary space, thereby offering potential robust discriminants for resolving the mass ordering problem.
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 study investigates cavity-mode couplings in two-port axion dark matter search systems, revealing that while the scanning rate cancels systematic errors from the strongly coupled port, measuring the weakly coupled port's strength is essential to eliminate residual uncertainties and recover lost experimental sensitivity.
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 introduces AURORA, a scalable, high-performance, and experiment-agnostic distributed data acquisition framework designed to meet the demanding bandwidth requirements of next-generation rare-event search experiments like PandaX-xT, achieving a benchmark throughput of over 3 GB/s.