2160 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 the development and characterization of pixelated Capacitive-Coupled LGAD (ACLGADpix) detectors with a 100 m pitch, demonstrating uniform high-precision timing performance through tests with beta rays, infrared lasers, and electron beams for future high-luminosity collider applications.
This paper critiques a recent lattice QCD study that claims to exclude a QCD critical endpoint below MeV, arguing that the entropy-contour method used fails to directly probe critical singularities and therefore cannot provide model-independent constraints on the critical point's location.
This paper utilizes Born-Oppenheimer Effective Field Theory and lattice QCD calculations to demonstrate that the near-degeneracy and specific decay patterns of the hidden-bottom tetraquarks and arise from the degeneracy of their underlying light degrees of freedom, identified as and adjoint mesons.
This paper proposes a minimal extension of the Standard Model featuring a -stabilized complex scalar dark matter candidate coupled to up-type quarks via a heavy vector-like quark, successfully addressing up-type flavor-changing neutral currents and dark matter relic density while offering testable signatures at future muon colliders.
This paper demonstrates that existing torsion balance experiments, originally designed to test the Equivalence Principle, already provide the most stringent constraints on sub-eV dark matter scattering with nucleons by leveraging coherence-enhanced signals from repeated interactions.
This paper investigates a scotogenic extension of the Standard Model with two inert doublets and three singlet Majorana fermions, identifying viable parameter spaces for radiative neutrino mass generation and dark matter while revealing that approximately 60% of these regions are excluded by recent CMS measurements of the boson mass due to constraints on the oblique parameter .
By re-analyzing data from the Taiwan Axion Search Experiment with Haloscope (TASEH) while accounting for scanning timing information, the authors derive world-leading constraints on dark photon dark matter that exceed naive rescaling limits by a factor of two and demonstrate the critical importance of avoiding magnetic-field-only vetoes to prevent discarding valid dark photon signals.
This paper presents an Effective Field Theory study of the process at the Future Circular Collider (FCC-$hh$), demonstrating its unique capability to probe anomalous and couplings through a comprehensive collider analysis of the final state.
This paper proposes a TeV-scale baryogenesis scenario based on Dirac leptogenesis with resonantly enhanced CP asymmetry, which predicts observable decay asymmetries at colliders and a singlet scalar dark matter candidate consistent with thermal relic abundance.
This paper demonstrates that incorporating infrared and collinear safety along with E(2) and O(2) equivariance into graph neural networks for quark-gluon discrimination enhances model stability and interpretability by directly aligning learned latent representations with established QCD observables like Energy Flow Polynomials.