1429 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 9.95 kg·yr of exposure from the CUPID-0 experiment, researchers found no evidence of sterile neutrinos in the double beta decay of Se and established the most stringent upper limit to date on the active-sterile mixing probability () for a sterile neutrino mass of 0.7 MeV.
This paper investigates inclusive heavy meson ( and ) photoproduction in ultraperipheral $pPb$ and $PbPb$ collisions at LHC energies using the color dipole formalism with various unintegrated gluon distribution models, presenting first-time predictions for mesons and demonstrating that future experimental data will significantly constrain high-energy hadronic structure descriptions.
The COHERENT collaboration reports the most precise measurement of the coherent elastic neutrino-nucleus scattering cross section to date using a germanium detector array at Oak Ridge National Laboratory, yielding results consistent with the Standard Model and providing improved constraints on non-standard neutrino interactions.
This paper proposes a novel method to test the unitarity of the CKM matrix by analyzing the high-energy behavior of production cross sections at the LHC and future colliders, deriving current constraints from ATLAS data and forecasting improved sensitivity for upcoming experiments.
This paper enhances the explainability of quark-gluon jet taggers by identifying key latent features, evaluating the limitations of Shapley values in correlated inputs, and employing symbolic regression to derive compact formulas that approximate the tagger's output.
Using a sample of events collected by the BESIII detector, this study reports the first search for the lepton number violating decay , finding no signal and setting an upper limit on its branching fraction of at the 90% confidence level.
This paper presents a prediction method for PMT afterpulse rates in the SUBMET experiment that achieves approximately 20% precision, thereby enhancing the reliability of background predictions for the search of millicharged particles.
Using a dataset of 428 fb collected by the Belle II experiment, researchers measured the time- and phase-space-integrated $CP$ asymmetry in decays to be , which represents the most precise result to date and is consistent with $CP$ conservation.
This paper reviews the current status of experimental searches for the chiral magnetic effect in relativistic heavy ion collisions, examining the observables and background mitigation techniques used while highlighting the lack of conclusive evidence due to significant background contributions and outlining future prospects.
This paper presents next-to-next-to-leading order (NNLO) QCD evaluations of proton and pion mass decompositions using gravitational form factors, comparing standard quark/gluon and trace-anomaly breakdowns with a novel twist-two/twist-four separation to demonstrate its advantages and reveal distinct parton-correlation behaviors between the two hadrons.