1495 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 provides a brief overview of tensor-polarized parton distribution functions for spin-1 hadrons, covering leading-twist structure functions, gluon transversity, higher-twist distributions, and related transverse-momentum-dependent functions up to twist 4 in the context of upcoming deuteron experiments.
This paper theoretically demonstrates and numerically calculates that nuclear modifications to the longitudinal-transverse structure function ratio in the deuteron, arising from transverse Fermi motion, are of the order of a few percent and should be accounted for in high-energy nuclear data analysis and future experimental investigations.
This paper utilizes recent LHCb and Belle II measurements of CP asymmetries in decays, combined with flavor-SU(3) relations and first-order breaking corrections, to generate new Standard Model predictions for CP violation and decay rates in related and processes.
This paper presents the integration of the invertible generative network CaloINN into the open-source interTwin Digital Twin Engine, utilizing post-processing modifications to enhance the accuracy of distribution tails in calorimeter shower simulations while maintaining computational efficiency.
This paper proposes a GeV-scale QCD axion model where the Peccei-Quinn symmetry is broken below the QCD scale and carried solely by the right-handed up quark, successfully evading standard constraints while predicting distinctive signatures such as heavy quark pair production at the LHC and rare Higgs or Z boson decays.
Using LHCb proton-proton collision data from 2015–2018, this paper reports the first observation of time-dependent $CP$ violation in decays, yielding precise $CP$-violation parameters that, when combined with previous measurements under SU(3) flavor symmetry, provide the most stringent constraint to date on the penguin contribution to the $CP$-violating phase in decays.
This paper proposes a composite Higgs scenario with partial fermion compositeness at a scale of approximately GeV, which naturally explains small neutrino masses and predicts a proton lifetime consistent with a potential decay signal observed at Super-Kamiokande, suggesting that Hyper-Kamiokande will soon detect numerous such events.
Using 7.33 fb of collision data collected by the BESIII detector, this study reports the first search for the radiative decay , finding no significant signal and setting an upper limit on its branching fraction of at the 90% confidence level.
The BABAR collaboration presents preliminary results from a new blind analysis of 460 fb⁻¹ of data, confirming consistency with their 2009 measurement of the cross section to improve the precision of the muon anomalous magnetic moment prediction.
This paper presents recent BESIII results on pure leptonic and semileptonic decays of mesons and charm baryons, as well as baryon pair polarization, leveraging the world's largest datasets collected at open-charm production thresholds.