2101 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 investigates active-sterile neutrino polarizability as a dimension-7 effective operator, deriving new constraints from neutrino-nucleus scattering and demonstrating that a light mediator realization of this interaction can explain the MiniBooNE low-energy excess while satisfying other experimental limits.
The authors developed a Transformer-based classifier for the MEG II experiment that effectively removes pileup hits in high-occupancy drift chambers, thereby improving tracking efficiency and resolution to enhance the sensitivity of the branching ratio measurement by approximately 10%.
This paper demonstrates that a single microwave cavity operating with a background magnetic field can function as a multi-mode detector array, enabling the localization and reconstruction of high-frequency gravitational wave properties—such as polarization and frequency drift—through the distinct antenna patterns of its nearly degenerate electromagnetic modes, thereby enhancing sensitivity to astrophysical sources.
Using 138 fb of proton-proton collision data at = 13 TeV collected by the CMS detector, this study measures the photon-fusion production cross section of W boson pairs in the electron-muon final state, finding results consistent with Standard Model predictions and thereby establishing stringent constraints on anomalous quartic gauge couplings within a dimension-8 effective field theory framework.
Using 138 fb of proton-proton collision data at = 13 TeV collected by the CMS experiment, this study presents the first measurements of nonresonant ZZ and ZH production in the bb final state and sets the first upper limits on heavy spin-0 and spin-1 resonances decaying into these channels, finding no evidence of physics beyond the standard model.
The paper introduces WavePID, a novel template-based classifier that leverages nanosecond-scale timing information from individual IceCube detector modules to significantly improve low-energy neutrino flavor identification by distinguishing between muon tracks and electromagnetic showers through complementary observables.
This paper presents a comprehensive analysis of exclusive semileptonic decays within and beyond the Standard Model by employing Heavy Quark Effective Theory with a data-driven -expansion to predict precise lepton flavor universality ratios and evaluate the sensitivity of various observables to new physics scenarios, including the Two Higgs Doublet Model and effective field theories.
Using upgraded PandaX-4T Run 2 data combined with previous results, researchers report the first positive indication of solar $pp$ neutrino--electron scattering below 165 keV, yielding a measured flux of that is consistent with Standard Solar Model predictions.
This paper presents a next-to-leading order (NLO) calculation matched to a Parton Shower (PS) for the radiative return processes (with ), implemented in the updated BabaYaga@NLO Monte Carlo generator to enable precision measurements of the pion form factor for the muon anomalous magnetic moment.
This paper presents the first complete theoretical calculations of jet substructure observables on tracks at the Large Hadron Collider, utilizing factorization theorems and renormalization group techniques to compute projected energy correlators up to four points at next-to-leading collinear logarithmic accuracy, thereby enabling precise comparisons between experimental tracking data and theory.