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.
This paper proposes a method to fully reconstruct the kinematics of tau lepton pairs at a Higgs factory collider to enable quantum tomography of their spin correlations, concluding that achieving a photon angular resolution of approximately 1 mrad is the most critical detector requirement for this analysis.
This paper demonstrates that a photon linear collider, leveraging its fully controllable colliding-photon polarization, serves as an ideal facility for probing quantum entanglement and Bell nonlocality in top-quark pair production across a broad phase space.
The LEGEND-200 experiment, which began stable data taking in 2023 at LNGS with 142.5 kg of enriched germanium detectors, reports its first results showing no evidence for neutrinoless double beta decay, thereby setting a new lower limit on the half-life of Ge at years and a combined limit of years when including data from GERDA and the MAJORANA Demonstrator.
This paper analyzes the compatibility of CMD3's production data with KLOE2's muon pair production and JLab's spacelike pion form factor measurements, finding that while CMD3 data shows no excess in analytical continuation, it remains largely incompatible with other recent measurements and the JLab results, impacting the derived QED running charge and hadronic vacuum polarization.
This paper summarizes recent electroweak measurements from the CMS experiment at the Large Hadron Collider, highlighting high-precision determinations of key parameters and process rates at 13.6 TeV that often match or exceed the precision of previous lepton collider results.
This paper reviews recent advancements in pattern recognition and data analysis for Ring Imaging Cherenkov (RICH) detectors, covering improvements in traditional reconstruction methods, the integration of modern machine learning, and emerging trends like global particle identification and generative models for simulation.
This paper combines effective field theories for dark matter-nucleus interactions and the Migdal effect in semiconductors to calculate signals for all ten dimension-six operators, derive new experimental bounds using EDELWEISS germanium data, and demonstrate that the resulting parameter space is disfavored by constraints on heavy mediators in simple UV completions.
This paper reports a search by the IceCube Neutrino Observatory for MeV neutrinos associated with compact binary mergers containing at least one neutron star during the LIGO-Virgo-KAGRA O1–O3 runs, finding no significant excess and establishing stringent upper limits on neutrino emission, including for the confirmed GW170817 event.
Using 196 fb of proton-proton collision data at 13 and 13.6 TeV collected by the ATLAS detector, this paper presents the first search for non-resonant Higgs boson pair production in association with top-quark pairs (), setting a 95% confidence-level upper limit of 20 times the Standard Model prediction on the production cross-section and constraining the corresponding Higgs effective field theory Wilson coefficient.
This paper forecasts that the ASTRA project, utilizing a 5-meter radio telescope at Fan Mountain Observatory to observe neutron stars between 0.5 and 4 GHz, can significantly improve constraints on axion-like particles by exploring new parameter space for axion-photon couplings, particularly if a dark matter spike exists at the Galactic center.