2517 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 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.
The paper introduces TauPolaris, a tool utilizing conditional normalizing flows to reconstruct tau lepton polarimetric vectors by modeling the full kinematic density of undetected neutrinos, thereby improving spin observable resolution and enhancing sensitivity to quantum entanglement and CP violation in Higgs boson decays at the LHC.
This paper introduces a new dimensionless parameter to characterize a novel extreme regime in high-energy electron-positron collisions where large-angle disruptions cause strong transverse relativistic motion and longitudinal beam reversal, revealing that previous models valid only for fail to accurately predict beam dynamics and necessitate fully electromagnetic particle-in-cell simulations.
This paper reviews novel particle identification concepts and technologies, such as compact Ring-Imaging Cherenkov detectors and precision timing systems, developed to meet the demanding requirements of future collider experiments like FCC-ee and the Electron-Ion Collider.
Using data from the Fermilab Muon g-2 Experiment collected between 2019 and 2020, researchers established a new direct 95% confidence level limit on the muon electric dipole moment of cm, finding the measured value consistent with zero.
This paper proposes using neutrino-induced charged current coherent pion production events in the DUNE near detector as a "standard candle" to simultaneously constrain the muon neutrino flux normalization and cross-section uncertainties, potentially reducing flux normalization errors to a few percent.
This paper introduces Monte Carlo event generators as digital twins for collider experiments, detailing their core components and techniques used to simulate the full chain of particle physics processes from hard scattering and radiation to hadronization and decay.
This study investigates the transport properties of mesons in a hadronic medium using Tsallis non-extensive statistics, revealing that drag and diffusion coefficients increase with temperature, the non-extensive parameter , and mass cutoffs, while the spatial diffusion coefficient decreases with these factors and suggests an upper limit of to remain consistent with AdS/CFT bounds.
This paper interprets the LHCb observation of the meson as the chiral partner of the ground state , thereby validating the chiral doubling scenario for heavy-light hadrons and predicting the existence of a yet-unobserved narrow beauty-strange meson at approximately 5747 MeV.