2527 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 argues that the axial U(1) anomaly is not physical and proposes a mechanism wherein the eta and eta' mesons are identified as Nambu-Goldstone bosons, thereby resolving the U(1) problem.
This paper reviews the fundamentals and significance of flavor-diagonal hadronic CP violation in the search for new physics, summarizes recent progress in quantifying its contribution to observables like electric dipole moments and beta decay correlations, and discusses current approaches to solving the strong CP problem without introducing additional fields.
Using 9 fb of LHCb proton-proton collision data, this study presents differential measurements of the branching fraction and asymmetry for the decay across various dimuon mass intervals, reporting results that are generally compatible with Standard Model predictions.
This paper establishes the strongest current constraints on millicharged particles with masses between 0.7 and 2 MeV by identifying overlooked -cascade sources in nuclear reactors and deriving new limits from electron recoil data, while also assessing sensitivity from solar production in low-threshold dark matter experiments.
This paper presents an updated extraction of unpolarized quark transverse momentum distributions in the pion by incorporating a more comprehensive treatment of theoretical uncertainties and, for the first time, investigating flavor-dependent differences using all available unpolarized pion-nucleus Drell-Yan data.
This paper investigates the semileptonic and nonleptonic weak decays of bottom baryons and using three-point QCD sum rules to calculate form factors, decay widths, and branching ratios, thereby providing theoretical predictions to test Standard Model validity and explore new physics in heavy baryonic systems.
This paper proposes that the KM3-230213A event's extreme energy and the scarcity of similar downward tracks in IceCube may result from detector geometry distortions misidentifying atmospheric muons as ultra-high-energy neutrinos, while also suggesting that future re-observations could validate new Tau neutrino astronomy and Z-boson resonance models for distant cosmic sources.
Using 164 fb of proton-proton collision data at TeV collected by the ATLAS detector, this paper presents inclusive, differential, and production-mode cross-section measurements of the Higgs boson in the decay channel, yielding results consistent with Standard Model predictions.
This paper proposes a method to distinguish between vector and scalar dark sector mediators by analyzing the angular distributions of their decay products, demonstrating that experiments like DUNE, SHiP, and FASER2 can determine the mediator's spin in significant regions of unconstrained parameter space.
This paper proposes a novel search for charged lepton flavor violation via muon-to-tau conversion using cosmic-ray muon samples in neutrino telescopes like IceCube, demonstrating their potential as a powerful complementary probe to low-energy experiments and colliders for constraining new physics models.