2160 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 low-energy electronic recoil data from the first science run of the XENONnT detector and a novel model accounting for charge cancellation effects, researchers established world-leading constraints on spontaneous quantum collapse models that exclude the original parameters of the Continuous Spontaneous Localization theory for the first time.
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 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.
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.
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.
This paper proposes using magnetically levitated superconductors to detect ultra-light dark gravitons in the dHz to kHz range, finding that while their sensitivity to matter couplings is limited compared to existing experiments, they could serve as highly sensitive laboratory probes for dark-graviton couplings to electromagnetism.
Using 20.3 fb⁻¹ of data collected by the BESIII detector, a search for the radiative decays and yielded no significant signals, resulting in the first experimental upper limits on their branching fractions and providing the first test of the Vector Meson Dominance mechanism in these charmed meson decays.
This paper investigates the potential of the future 100 TeV FCC-hh collider to discover or exclude heavy axion-like particles (ALPs) via light-by-light scattering in pp, pPb, and PbPb collisions, demonstrating that the facility offers significant sensitivity to ALP masses up to the TeV scale compared to current LHC bounds.
Using a large sample of events collected by the BESIII detector, this study presents the first amplitude analysis of the isospin-violating decay , identifying dominant intermediate processes and achieving the first observation of radiative transitions to isospin-triplet scalar mesons , , and with a significantly improved measurement of the total branching fraction.
This paper presents projected sensitivity estimates showing that the KATRIN experiment, utilizing its upcoming TRISTAN detector upgrade, will be capable of probing keV-scale sterile neutrino mixing amplitudes down to for masses between 4 and 13 keV, significantly extending the reach of previous laboratory searches despite potential systematic uncertainties.