2610 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 13.6 TeV proton-proton collision data collected by the CMS detector, this study measures angular correlations within jets induced by gluon polarization and finds that the results strongly favor theoretical models incorporating gluon spin effects over those that neglect them.
This paper utilizes Fourier-Bessel transformations of exclusive meson production cross sections from photon-proton collisions to reveal that the proton's baryon number is concentrated in a transverse radius of 0.33–0.53 fm, which is significantly smaller than the proton's charge and mass radii.
Using QCD sum rules, this study interprets the resonance as an -wave molecular pentaquark state and calculates its mass and decay properties, finding results consistent with experimental data.
This paper presents an end-to-end global event reconstruction framework combining geometric algebra transformers and object condensation clustering that significantly outperforms state-of-the-art rule-based algorithms in efficiency, fake-particle suppression, and mass resolution for future collider experiments like FCC-ee, thereby enabling rapid detector design iteration by decoupling performance from detector-specific tuning.
Using 1.4 years of atmospheric neutrino data from the first six detection units of the KM3NeT/ORCA detector, this study finds no evidence for isotropic Lorentz invariance violation and establishes competitive new limits on relevant coefficients.
This paper demonstrates that while relaxing the assumption of equal on-shell and off-shell Higgs coupling modifiers in Standard Model extensions can allow for a larger total width, realistic constraints still limit this increase to at most a factor of two compared to the standard indirect bounds.
This paper identifies fluorine-based compounds, particularly octafluoropropane, as optimal targets for measuring subleading axial-vector contributions in coherent elastic neutrino-nucleus scattering, demonstrating that such experiments could determine the axial coupling at the level and probe spin-dependent new physics.
This paper presents a unified Froggatt-Nielsen effective theory with three right-handed neutrinos and complex coefficients that simultaneously explains fermion flavor hierarchies, neutrino masses, dark matter, and the baryon asymmetry of the Universe, demonstrating that successful thermal leptogenesis is viable in both freeze-in and freeze-out scenarios.
This paper demonstrates that for near-horizontal cosmic-ray air showers, the longitudinal development can be reconstructed by mapping the time dependence of the observed induced electric field to atmospheric slant depth, enabling the inference of key shower parameters such as from single observer measurements.
Using a Ramsey-type apparatus with cold neutrons, researchers analyzed 24 hours of data to find no evidence of oscillating axion-like dark matter, thereby establishing the most stringent limits to date on the coupling between axion-like particles and gluons within a specific mass range.