1395 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 introduces a data-driven framework for estimating trigger efficiencies at LHCb and presents the design, implementation, and performance of the centralised software package TriggerCalib, which facilitates these calculations and uncertainty estimations for physics analyses.
This paper presents a covariant framework for calculating the decay rates of axion-like particles that couple to both gluons and quarks by identifying redefinition-invariant coupling combinations, thereby providing physical expressions applicable across a broad range of ALP masses.
This paper analyzes neutral kaon decays into axion-like particles (ALPs), demonstrating that comparing three-body () and two-body () channels—while accounting for often-neglected weak-interaction contributions—provides a powerful probe of CP violation and flavor-violating ALP couplings in both minimal and non-minimal scenarios.
This paper proposes that combining the analysis of neutrinoless double-beta decay transitions to both ground and excited states in large liquid xenon detectors can significantly enhance discovery sensitivity and mitigate nuclear matrix element uncertainties in the search for the inverted neutrino mass ordering.
Using 140 fb of 13 TeV proton-proton collision data, the ATLAS experiment reports the first observation of triboson production with a significance of 5.9 standard deviations and derives constraints on anomalous quartic gauge-boson couplings within the effective field theory framework.
Using the CMS detector, this study presents the first measurements of correlations among mixed-order moments of two and three flow harmonics in XeXe and PbPb collisions, leveraging the distinct nuclear shapes of doubly-magic Pb and triaxially deformed Xe to probe initial-state geometry fluctuations and constrain the nonlinear hydrodynamic response of the quark-gluon plasma.
Using a four-dimensional amplitude analysis of proton-proton collision data from the LHCb experiment, this study confirms the existence of the exotic structure in decays and investigates its properties through both Flatté parametrization and triangle singularity mechanisms.
Using the full ATLAS Run 2 dataset at TeV, this paper presents the first measurement of the differential ratio between -channel single top-quark and antiquark production cross-sections, comparing these results to theoretical predictions and deriving constraints on the Wilson coefficient within an effective field theory framework.
Using a sample of approximately 10 million events collected by the BESIII detector, this study reports the first search for the decay involving a dark scalar and invisible dark matter, finding no significant signal and setting stringent new limits on branching fractions and dark-matter-nucleon scattering cross sections that improve upon previous constraints by five orders of magnitude.
This paper applies radiative corrections to recent MINERvA antineutrino-hydrogen scattering data to extract the nucleon axial-vector form factor and radius, thereby enabling more precise comparisons with lattice QCD predictions and reducing uncertainties in neutrino interaction modeling.