1404 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 presents a comprehensive phenomenological analysis of Deeply Virtual Meson Production at HERA and the future Electron-Ion Collider within the Color Glass Condensate framework, deriving twist-3 helicity amplitudes and incorporating next-to-leading order corrections via improved small- evolution equations to provide the most accurate theoretical description of relevant observables to date.
This paper reports the results of a second iteration of an experiment at the ILL PF2 facility searching for neutron-hidden-neutron oscillations via magnetic-field-induced neutron disappearance, finding no evidence for such oscillations and establishing new 95% confidence level lower limits on the oscillation period () of over 200 ms and 100 ms for mass splittings in the ranges of 60–400 peV and 400–1550 peV, respectively.
Using 138 fb of proton-proton collision data at = 13 TeV collected by the CMS detector, this study presents the first comparison of corrected dijet angular distributions with next-to-next-to-leading order perturbative QCD predictions including electroweak corrections and sets the most stringent limits to date on various beyond-the-standard-model scenarios, including quark compositeness, extra dimensions, and anomalous gluon couplings.
This paper presents a comprehensive characterization of custom silicon photomultiplier arrays from FBK and Hamamatsu, demonstrating their operational viability and performance metrics after neutron irradiation up to 1e14 neq/cm² across a temperature range from room temperature down to 100 K to support the LHCb Upgrade 2 SciFi Tracker.
This perspectives article explores the synergies between particle physics and gravitational wave astronomy, highlighting how next-generation gravitational wave measurements can provide complementary insights into dense matter, dark matter, early Universe phase transitions, and cosmological evolution that extend beyond the reach of current and future particle colliders.
This paper demonstrates that loop-level corrections to the leptonic decays of the , , and Higgs bosons provide stronger exclusion limits on heavy, flavor-specific leptophilic gauge bosons than current direct search constraints, offering a complementary probe for new physics at the TeV scale and beyond.
Using 20.3 fb⁻¹ of collision data collected by the BESIII detector, this paper presents the first amplitude analysis of the singly Cabibbo-suppressed decay , measuring its absolute branching fraction and revealing that the dominant intermediate process is S-wave dominant with a longitudinal polarization fraction of approximately 0.47.
This paper presents a high-precision framework for predicting reactor antineutrino fluxes at underground laboratories by incorporating matter effects (MSW) through both one-dimensional and three-dimensional Earth models, aiming to quantify the impact of Earth's structural features on flux accuracy as geoneutrino measurements approach sub-percent precision.
This paper details the ground-based electron-beam testing and Geant4 simulation of the Gamma-Ray Transient Probe (GTP) for the DRO-A satellite's GTM, confirming its performance meets design specifications in terms of dead time, time recording, and energy response within the 0.4–1.4 MeV range.
This paper proposes utilizing high-intensity positron beams at CERN's NA62 experiment to search for dark sector particles in both visible and invisible decay channels while enabling precision measurements of Standard Model observables and the potential discovery of True Muonium.