1495 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 parameter-economical, unified quark-diquark effective mass framework calibrated on baryon spectroscopy and meson splittings to systematically predict the spectra of heavy tetraquarks and pentaquarks while naturally incorporating heavy-quark spin and flavor symmetries.
This paper proposes a covariant orbital-spin decomposed amplitude using massive canonical-spinor variables to streamline partial wave analysis of complex decay chains, a method validated by consistent results in the TF-PWA framework for the decay.
The MAGNETO- experiment utilized a high-statistics measurement of Pu decays with metallic magnetic calorimeters to find no evidence for keV-scale heavy neutral leptons, thereby establishing an upper limit of at 95% confidence for an 11.5-keV HNL mixing with the electron neutrino.
This paper describes the "Fair Universe Higgs Uncertainty Challenge," a pioneering competition in high-energy physics and machine learning that focused on developing analysis techniques to accurately measure uncertainties and provide credible confidence intervals for the cross-section, with results now publicly available on Zenodo.
This paper proposes a minimal framework utilizing the discrete gauge symmetry , motivated by the Standard Model's internal structure, to naturally resolve the axion quality problem while simultaneously explaining neutrino masses, baryon asymmetry, and dark matter.
Using QCD sum rules, this study calculates the mass and width of the axial-vector hadronic molecules and with quark content , predicting a mass of approximately 15.8 GeV and an unstable width of about 114 MeV to guide future experimental searches for fully heavy molecular structures.
This paper proposes a novel, decentralized approach to securing the domestic supply of the medical isotope Mo by adapting high-current deuterium cyclotrons, originally designed for neutrino research, to generate sufficient neutrons for isotope production without relying on nuclear reactors or highly enriched uranium.
This paper presents a combined ATLAS and CMS analysis of Higgs boson pair production at 13 TeV using Run 2 data, which found no significant evidence for the signal but established upper limits on the production cross-section and set constraints on the Higgs trilinear self-coupling and its coupling to vector bosons.
This paper presents a radiation-hardened 130 nm CMOS delta-sigma current digitizer capable of achieving over 200 dB dynamic range and sub-picoampere resolution for beam loss monitoring, while maintaining a 10 µs response time for machine protection and demonstrating robust performance up to 100 Mrad total ionizing dose.
This paper presents a novel two-dimensional shift and rotation method that leverages the correlation between time-of-flight mass-squared and ionization energy loss to significantly improve charged pion and kaon identification in heavy-ion collisions, extending the reliable measurement range to approximately 3 GeV/ while maintaining over 98% purity and preserving elliptic flow consistency.