2092 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 8.4 fb of LHCb data, this study presents a model-independent measurement of transversity amplitudes via Legendre polynomials, revealing significant deviations in the Wilson coefficient from Standard Model predictions that help disentangle hadronic effects from potential new physics.
Using the NOvA near detector, researchers achieved the most precise measurement to date of the muon antineutrino charged-current quasi-elastic cross section on hydrogen at an average energy of 1.9 GeV, obtaining a value of cm with sufficiently low non-flux uncertainties to enable future constraints on the absolute antineutrino flux.
This paper proposes a class of seesaw models where a symmetry-protected texture-zero structure allows for arbitrarily large lepton-number violation in the heavy sector while naturally yielding sub-eV neutrino masses, thereby predicting observable signatures of heavy neutral leptons at current and future experiments.
This paper presents a comprehensive analysis of COHERENT Ge-mini and TEXONO germanium-based data to validate the Standard Model's weak mixing angle and establish stringent, complementary constraints on neutrino electromagnetic properties, light mediators, and sterile neutral leptons.
This paper demonstrates that paleo-detectors, which record nuclear recoil tracks in ancient minerals, can effectively reconstruct WIMP masses (particularly below 10 GeV and up to 1 TeV) and distinguish between standard and non-standard WIMP-nucleus interactions without requiring directional measurements, offering capabilities that complement and extend beyond conventional direct-detection experiments.
Using proton-proton collision data from the CMS experiment at 13 and 13.6 TeV, this study presents the first dedicated search for heavy resonances decaying into four top quarks in the two-lepton plus jets channel, finding no significant excess and setting upper limits on production cross sections for various vector, scalar, and pseudoscalar boson models.
This paper presents the detailed design and sensitivity projections for the ALPHA Phase I experiment, a plasma haloscope utilizing wire-array resonators to search for QCD dark matter axions in the 10–20 GHz mass range, thereby overcoming the size limitations of traditional microwave cavities to probe theoretically preferred post-inflationary axion masses.
This paper proposes a unified framework where quark and lepton mixing parameters, including the Jarlskog invariant, neutrino mass ratios, and CP-violating phases, are precisely described by commensurate structures based on a single hierarchy parameter raised to specific rational powers, resulting in a "digital-clock" quantization of unitarity triangles on a lattice that aligns with current experimental data and yields testable predictions for future neutrino experiments.
This paper proposes utilizing the Large Hadron Collider's existing superfluid helium-4 cooling system as a large-scale detector for Axion (Anti)Quark Nuggets (AQN), highlighting how the significant heating induced by AQN propagation through surrounding metal components could damage the enclosure and serve as a detection signature.
Using LHCb data from 2016–2018, this study measures the branching fraction of the to for the first time and performs a simultaneous amplitude analysis of and decays, revealing significant differences in their Dalitz-plot distributions that suggest distinct internal structures and potential exotic contributions.