2092 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 CMS data from 5.36 TeV PbPb collisions, this study reports the first observation of a significant negative spin-dependent azimuthal asymmetry in coherently photoproduced J/ mesons, confirming a theoretical model where the meson inherits the incident photon's linear polarization and suggesting a novel method for reaction plane determination.
The CMS experiment analyzed 200 fb of proton-proton collision data at 13 and 13.6 TeV to search for the rare Higgs boson decay , observing a signal strength consistent with the Standard Model prediction with an observed significance of 1.9 standard deviations.
This paper systematically investigates baryon-baryon interactions in singly bottomed dibaryon systems using the chiral quark model, revealing that low-isospin and decuplet-decuplet channels favor stronger attraction and identifying numerous potential bound states that warrant further experimental verification.
The paper introduces **candela**, a differentiable neural surrogate that learns the photon Green's function for the IceCube Neutrino Observatory to simulate neutrino events 50–100 times faster than traditional Monte Carlo methods while maintaining high accuracy and enabling end-to-end gradient-based optimization of scattering-medium properties.
This paper proposes that measuring the flavor ratio of displaced leptons from long-lived charged mediators at the High-Luminosity LHC provides a unique, -independent method to determine the neutrino mass ordering, as the "shared-coupling condition" in various neutrino mass models predicts a distinct electron-to-muon yield ratio that differs by over an order of magnitude between the Normal and Inverted Hierarchies.
This paper proposes that the high-energy nuclear recoil observed by the LUX-ZEPLIN experiment can be explained by exothermic dark matter with a mass of 30–200 GeV and a mass splitting of 0.5–1 MeV within a minimal inelastic dark photon model, a scenario that is consistent with various cosmological histories and predicts observable events in argon and germanium detectors.
This paper establishes next-to-leading order unitarity bounds and bounded-from-below conditions for the Georgi-Machacek and extended Georgi-Machacek models, using these improved theoretical constraints to perform global fits with LHC Higgs data that disfavor specific coupling regions and set upper limits on scalar quartic couplings and heavy Higgs mass differences.
This paper presents a machine-learning-based particle-flow (MLPF) algorithm for the CMS detector that replaces traditional heuristic reconstruction with a unified GPU-accelerated model, achieving physics performance comparable to standard methods while significantly improving jet energy resolution and reducing inference time.
This paper presents the first demonstration of an online data selection algorithm using real charge data to identify electrons from stopping cosmic ray muons in the MicroBooNE liquid argon time projection chamber, establishing a crucial proof-of-principle for future LArTPC experiments like DUNE.
Using 13 TeV $pp$ collision data from the LHCb experiment, this paper reports the first experimental search for decays and the most precise measurement to date of the branching fraction, while also providing new upper limits and measurements for several other anomalous decays of the and mesons.