1472 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 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.
This paper investigates the sensitivity of a future 250 GeV collider to CP-violating and CP-conserving anomalous Higgs-gauge couplings within the SMEFT framework, demonstrating that utilizing beam polarization and spin-correlation asymmetries across dominant Higgs decay channels can achieve sub-percent precision on dimension-6 operator coefficients, provided systematic uncertainties are controlled below the few-percent level.
This paper utilizes LHC dijet measurements, incorporating two-loop renormalization group effects, to establish constraints on ten third-generation four-quark operators, yielding nominal or comparable bounds for bottom-quark operators while leaving limits on the remaining operators weak.
Using 365 fb of data from the Belle II experiment, this study measures the partial branching fraction of inclusive charmless semileptonic meson decays with lepton energies above 1 GeV to determine the CKM matrix element as , a result consistent with the world average from previous inclusive measurements.
This paper presents a study of differential and measurements at the FCC-hh with 30 ab of data at 84 TeV, demonstrating the feasibility of probing high- regimes for new physics with significant precision and highlighting the benefits of optimized lepton isolation for boosted object reconstruction.
The authors developed and validated a semiautomatic system combining robotics, high-resolution imaging, and image analysis to efficiently screen 1 cm³ plastic scintillator cubes for future neutrino detectors, achieving 10 μm precision, over 80% consistency with manual screening, and a 3.1% rejection rate.