2503 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 the spectroscopic and decay properties of the meson using a nonrelativistic quark model, predicting mass spectra, decay constants, radiative widths, and Regge trajectories while identifying the mass and -wave fine-structure ordering as critical experimental tests for the system's spin-dependent dynamics.
This paper presents preliminary results demonstrating the extension of the parallelized mkFit algorithm to track fitting for the CMS High-Level Trigger, aiming to address the increased computational demands of the High-Luminosity LHC Phase-2 detector while maintaining physics performance.
This paper proposes that the simultaneous observation of a nuclear modification factor near unity and significant high- elliptic flow in relativistic Pb collisions is explained by a mechanism where hard partons coalesce with boosted thermal medium partons, resulting in anisotropic collective push that enhances hadron flow while predicting a smaller signal for jets.
This paper introduces the range-projected test statistic to resolve unphysical goodness-of-fit results in multi-distribution neutrino cross-section measurements caused by rank-deficient covariance matrices arising from shared events, by restricting the analysis to the subspace of independent statistical information.
Using 13 TeV and 13.6 TeV proton-proton collision data collected by the ATLAS detector, a search for a top-philic vector boson () produced in association with top quarks and decaying into a top-quark pair found no significant excess over the Standard Model background, excluding masses below 1150 GeV at 95% confidence level for a benchmark coupling scenario.
This paper proposes that the 248 keV nuclear-recoil event observed by the LUX-ZEPLIN (LZ) Collaboration can be explained by composite inelastic dark matter, where a dimension-ten operator splits a 1 TeV dark baryon into two Majorana states via endothermic scattering mediated by a leptophobic vector, yielding a cross-section consistent with LZ data and existing experimental constraints.
Using the full dataset from the MicroBooNE detector, this paper presents the first measurement of flux-integrated differential cross sections for electron neutrino interactions on argon as a function of kinematic imbalance variables, revealing tensions between the experimental data and current neutrino event generator models in regions less dominated by final-state interactions.
Motivated by a recent high-energy recoil event reported by the LUX-ZEPLIN collaboration, this paper proposes an endothermic -portal Majorana dark matter model within a gauged framework, demonstrating how the interplay between dark matter relic abundance constraints and LHC resonance searches can explain the anomaly while offering a testable synergy for future experiments.
This study demonstrates that analyzing production at the FCC-ee across multiple running scenarios offers a novel, direct method to constrain the effective coupling with 15% precision and resolve sign ambiguities, providing complementary sensitivity to decay-based measurements and global SMEFT fits.
This paper investigates the origin of baryon-meson sum rules in decays by analyzing helicity amplitudes at kinematic endpoints, revealing that while the sum rule arises from short-distance structure, its coefficient is a nontrivial integrated quantity shaped by hadronic dynamics rather than a local heavy-quark symmetry.