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 employs a Bayesian global fit incorporating next-to-leading-order unitarity constraints and experimental data to demonstrate that parameter regions in the Type-II Two-Higgs-Doublet Model allowing for a metastable electroweak vacuum are excluded at both tree and one-loop levels.
This paper constrains the parameter space of the Plan B Model, which introduces a TeV-scale to explain fermion mass features and transitions, by re-analyzing LHC direct searches and differential cross-section measurements to identify excluded regions and project the discovery potential of the High-Luminosity LHC.
Using 13 TeV proton-proton collision data from the ATLAS detector, this study searches for a scalar resonance decaying into a Higgs boson and an additional scalar (both to pairs) in the final state, finding no significant excess over Standard Model backgrounds and setting 95% confidence level upper limits on the production cross-section times branching ratio.
The paper introduces Dffusion, a permutation-equivariant diffusion model that serves as a fast and accurate surrogate for computationally expensive Monte Carlo simulations of incoherent pair creation backgrounds at high-luminosity colliders like FCC-ee, generating events nearly four orders of magnitude faster than Geant4 while faithfully reproducing key kinematic and detector-level distributions.
This review article explores the origins of photons in ultra-peripheral collisions of heavy ions and protons, highlighting their diverse applications in studying nuclear structure at low Bjorken-, probing beyond-standard-model physics, and investigating new quantum mechanical regimes through interferometry.
This study demonstrates that nonlinear collective flow in ultra-central U+U collisions, particularly through the sixth-order harmonic's sensitivity to mode coupling, provides a direct and experimentally accessible signature to isolate the intrinsic hexadecapole deformation () and reveal deviations from the quadrupole--hexadecapole scaling in nuclear structure.
This paper demonstrates that specific new physics scenarios, such as a model with large complex phases and right-handed couplings, can simultaneously enhance the branching ratios of , , and while resolving the anomaly, all without conflicting with the recent NA62 measurement of or the constraint.
This paper presents the development and successful validation of a high-performance, modular 64-channel readout system (PDS1500) for the Jinping Neutrino Experiment, demonstrating that its high-speed sampling, low-noise, and deterministic timing capabilities fully meet the stringent requirements for future large-scale neutrino detection.
This paper proposes a novel integral representation for neutrino mass-squared differences to derive stringent analytical bounds on the absolute neutrino mass scale and effective masses, yielding a competitive upper limit of eV under cosmological constraints and demonstrating how Gatto-Sartori-Tonin type relations naturally emerge from this framework.
This paper introduces theoretical approaches to multi-quark states—specifically hadrocharmonia, compact tetraquarks, and hadronic molecules—and contrasts their predictions with current and potential future observations, with a primary focus on doubly heavy systems.