2503 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 reviews Bayesian models for estimating uncertainties from missing higher-order perturbative predictions and demonstrates how modifying their likelihoods and priors can yield smooth, quasi-Gaussian probability distributions that better align with standard physics analysis assumptions.
This paper presents a new Line Segment Tracking (LST) implementation using quadruplet objects (T4) that significantly enhances the reconstruction efficiency of displaced tracks at the CMS experiment, extending the radial acceptance from 40 cm to 60 cm to better meet the high-pileup demands of the HL-LHC.
This paper presents a model-independent analysis of the LUX-ZEPLIN experiment's high-energy nuclear recoil candidate, demonstrating that while inelastic dark matter with specific mass and splitting parameters can naturally explain the event's location, the associated kinematic suppression and Helm form factor effects create tension with sideband data, suggesting that a dedicated search in the 271–800 keV range is necessary to decisively test this hypothesis.
This paper proposes an optimal analysis leveraging machine learning-based flavor tagging at the FCC-ee to achieve unprecedented precision in measuring hadronic cross-section ratios, thereby significantly enhancing sensitivity to flavor non-universal and flavor-violating four-fermion interactions within the SMEFT framework and simplified models addressing -meson anomalies.
This paper proposes that future Tera-Z factories like CEPC and FCC-ee can detect triple boson signatures via the decay chain , offering a promising avenue to probe new gauge symmetries and significantly improve current bounds on dark photon kinetic mixing parameters.
This paper investigates the viability of neutralino dark matter within five-dimensional gauge-mediated supersymmetry breaking models with a TeV gravitino, analyzing four distinct scenarios to determine their allowed parameter spaces, consistency with experimental limits, and prospects for detection at the HL-LHC and direct detection experiments.
This report discusses the prospects for sensitive tests of Standard Model predictions and searches for new physics through unique studies of CP violation in charmed hadrons, hyperons, and tau leptons, as well as CPT invariance tests in neutral kaon mixing, at a future high-luminosity Super Tau-Charm Facility operating between 2.0 and 7.0 GeV.
The ATLAS collaboration presents the first measurement of the coincident production of dimuons and rho mesons in ultra-peripheral Pb+Pb collisions at 5.02 and 5.36 TeV, confirming the occurrence of multi-photon-induced processes and providing new insights into their impact parameter dependence.
This paper proposes and evaluates analysis strategies using kinematic observables and machine learning to measure longitudinally polarized and bosons in associated Higgs production at the LHC, projecting that the High-Luminosity LHC will achieve 5 discovery significance and percent-level cross-section precision for these states in the and channels.
Using a large sample of events collected by the BESIII detector, this study reports the first measurement of the absolute branching fraction and axial-vector to vector coupling for the semileptonic decay at an electron-positron collider, achieving precision comparable to previous experiments despite using significantly fewer statistics.