2117 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 a dataset of approximately events collected by the BESIII detector, researchers searched for the charged lepton flavor violating decay and, finding no signal, established a new upper limit on its branching fraction of at the 90% confidence level, improving the previous best limit by one order of magnitude.
This paper presents recent results from the ATLAS and CMS experiments at the LHC on searches for resonant and nonresonant multi-Higgs production, which are crucial for measuring Higgs self-couplings and probing physics beyond the Standard Model.
This paper presents a high-bandwidth levitated magnetometer utilizing a double-resonance mode and hybrid ferromagnetic components to achieve a magnetic-field resolution of 0.7 fT, thereby establishing new direct limits on axionlike dark matter in the 40–3000 Hz frequency range that improve upon previous results by over four orders of magnitude.
This paper reports on the BART experiment, which uses a particle accelerator to directly test the hypothesis that low-energy electron emission is a key mechanism influencing test mass charging in the LISA Gravitational Reference Sensor by measuring proton-induced charging as a function of electrostatic potential.
Using the MicroBooNE detector, this paper presents the first measurement of muon-neutrino-induced charged-current production on argon via transverse kinematic imbalance variables, revealing that current theoretical models fail to simultaneously reproduce all observed kinematic observables.
This paper argues that the axial U(1) anomaly is not physical and proposes a mechanism wherein the eta and eta' mesons are identified as Nambu-Goldstone bosons, thereby resolving the U(1) problem.
This paper reviews the fundamentals and significance of flavor-diagonal hadronic CP violation in the search for new physics, summarizes recent progress in quantifying its contribution to observables like electric dipole moments and beta decay correlations, and discusses current approaches to solving the strong CP problem without introducing additional fields.
Using 9 fb of LHCb proton-proton collision data, this study presents differential measurements of the branching fraction and asymmetry for the decay across various dimuon mass intervals, reporting results that are generally compatible with Standard Model predictions.
This paper establishes the strongest current constraints on millicharged particles with masses between 0.7 and 2 MeV by identifying overlooked -cascade sources in nuclear reactors and deriving new limits from electron recoil data, while also assessing sensitivity from solar production in low-threshold dark matter experiments.
This paper presents an updated extraction of unpolarized quark transverse momentum distributions in the pion by incorporating a more comprehensive treatment of theoretical uncertainties and, for the first time, investigating flavor-dependent differences using all available unpolarized pion-nucleus Drell-Yan data.