1442 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 clarifies the assumptions underlying the standard Poisson-based calibration method for high-resolution cryogenic detectors using monoenergetic photons, analyzes how realistic detector performance violates these assumptions to introduce bias, and evaluates the specific impact of detector parameters on calibration accuracy.
This paper presents precise NLO+NLL QCD calculations for associated $ZH$ production via gluon fusion at the LHC, demonstrating that threshold resummation enhances the cross-section by approximately 20% and significantly reduces scale uncertainties compared to fixed-order NLO results, while also combining these findings with Drell-Yan type calculations to achieve the most accurate predictions for hadron collisions.
This MINERvA paper presents high-statistics measurements of charged-current single production cross sections down to zero pion kinetic energy, revealing significant discrepancies of up to 20% between the data and current neutrino event generator models across key kinematic regions.
This paper presents a comprehensive review of recent flavour physics results from the ATLAS and CMS experiments using Run 2 and partial Run 3 LHC data, covering measurements of quarkonia, charm production, B meson properties, all-charm tetraquarks, and rare heavy-flavour decays to advance the precision frontier in the field.
Using 61.9 fb of proton-proton collision data at = 13.6 TeV, the CMS collaboration performed an inclusive search for low-mass spin-zero resonances decaying to in the 20–60 GeV range and achieved a 5.8 observation of decays, while setting 95% confidence level upper limits on the production cross section times branching fraction for any new resonances.
This paper presents a study of Z boson decays into four charged leptons using proton-proton collision data at 8 and 13 TeV collected by the CMS detector, reporting precise measurements of inclusive and individual branching fractions, differential decay rates, and triple-product asymmetries that are consistent with Standard Model predictions and used to set limits on new gauge bosons.
This paper investigates the intermittency and fractal behavior of charged particles in Pb-Pb collisions at 5.02 TeV using EPOS4 and PYTHIA8 simulations to analyze large density fluctuations as potential signatures of the QCD phase transition and critical point.
This paper argues that CP is conserved in strong interactions because topological quantization arises from taking the infinite spacetime volume limit before summing over topological sectors, a reasoning the authors demonstrate is consistent with steepest-descent path integral constructions and robust against various objections regarding theta-parameters and instanton approximations.
This paper utilizes the String Melting mode of the AMPT model to investigate the scaling behavior and intermittency of charged particle multiplicity fluctuations in Xe–Xe collisions at = 5.44 TeV, determining key parameters such as anomalous fractal dimensions and scaling exponents to characterize the system's self-similar dynamics and provide baseline predictions.
Using 199 fb of proton-proton collision data collected by the ATLAS detector at 13 and 13.6 TeV, a search for a heavy scalar resonance decaying into a lighter scalar and a Higgs boson in the final state found no significant excess over the Standard Model background, leading to the setting of 95% confidence level upper limits on the production cross-section times branching fraction.