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 data from the CLAS12 spectrometer at Jefferson Lab, this paper reports the most precise measurement to date of the longitudinal spin transfer to hyperons in electron-proton scattering, providing critical insights into the relative dominance of current and target fragmentation mechanisms in production.
Using 138 fb of proton-proton collision data at = 13 TeV collected by the CMS experiment, this paper presents measurements of differential cross sections and the leptonic charge asymmetry for top quark-antiquark pair production in association with a W boson, finding that normalized distributions agree with Standard Model predictions while absolute cross sections are slightly higher, consistent with previous inclusive results.
This study utilizes PYTHIA8 simulations to investigate the correlation between prompt and nonprompt production and transverse spherocity in 13 TeV $pp$ collisions, demonstrating how this event-shape observable can distinguish hard QCD processes from underlying events influenced by multiple parton interactions.
This study proposes that medium vorticity induces spin-dependent dissociation of quarkonia via a modified color-singlet potential, thereby altering their spin alignment () in Pb--Pb collisions at TeV and offering new insights into the microscopic dynamics of the vortical quark-gluon plasma.
This paper summarizes the current status of next-to-leading-order electroweak corrections to double-Higgs production within Standard Model and Higgs Effective Field Theory frameworks, highlighting how these calculations enhance sensitivity to Higgs self-couplings and provide complementary constraints on the Higgs potential for future collider experiments.
This paper presents the first experimental signatures of the beam-breakup instability in plasma accelerators, obtained through the E302 experiment at SLAC's FACET-II facility and validated by full 3D particle-in-cell simulations, highlighting the instability's detrimental impact on beam quality at high efficiencies.
This article reviews recent R&D efforts in Cherenkov imaging technologies, highlighting advances in sensor technology, radiator materials, and photon timing that address growing demands for momentum coverage, precision, and radiation tolerance in future particle and nuclear physics experiments.
The COSINE-100 experiment reports world-leading constraints on spin-dependent dark matter-proton scattering in the 1.75–2.25 GeV/c² mass range and sets new sub-GeV limits via the Migdal effect by achieving a record-low detection threshold of 3–4 photoelectrons, despite observing no statistically significant annual modulation signal.
This paper establishes Casimir geometry as an independent observable for probing short-range forces by demonstrating distinct geometric scaling between Yukawa interactions and the Casimir background, thereby deriving the first constraints from sphere-sphere and plate-plate geometries to set the most stringent bounds for interaction ranges below meters.
Using 140 fb of proton-proton collision data at TeV, the ATLAS experiment presents precise differential cross-section measurements for inclusive production to test Standard Model predictions, constrain parton distribution functions, and set improved limits on anomalous weak-boson self-interactions within an effective field theory framework.