2551 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 exclusive semileptonic decays of using a light-front quark model that incorporates nonvalence contributions, yielding branching ratios consistent with recent BESIII measurements and demonstrating the significant role of these nonvalence effects in such baryon decays.
Using 140 fb of 13 TeV proton-proton collision data collected by the ATLAS detector, this study searches for leptoquarks in final states containing a hadronically decaying -lepton and missing transverse momentum, finding no excess over Standard Model predictions and setting 95% confidence level limits on couplings for vector-leptoquark masses between 1.5 and 3.0 TeV.
This paper reports on the design, construction, and successful commissioning of the NA64-DTC, an ESP32-based remote automation controller that enables non-invasive, opto-isolated control of the CERN "DESY Table" motorized platform via HTTP, thereby facilitating remote operation and reducing manual intervention for various experiments.
The CMS experiment reports the first measurement of charged-hadron pseudorapidity distributions in oxygen-oxygen collisions at = 5.36 TeV, revealing that while the particle density per participating nucleon in central collisions matches that of lead-lead collisions, the data exhibit deviations from simple scaling laws that highlight the significant role of collision geometry and finite-size effects in light ion systems.
This comment refutes the claim that Electroweak Penguin-tree relations (ETRs) are invalid by demonstrating their mathematical rigor as exact group-theoretical results under unbroken SU(3) symmetry, thereby explaining the discrepancy with a recent fit that yielded poor results when ETRs were applied.
This paper proposes a novel framework for detecting heavy composite dark matter using muscovite mica as a paleodetector, combining Sedov-Taylor thermal spike modeling and SRIM/TRIM simulations with a new rapid X-ray fluorescence readout method to establish projected sensitivities and critique previous exclusion limits.
This paper reports the first measurement of space- and time-correlated charge noise in superconducting qubits at an underground facility, demonstrating that while shielding and depth significantly reduce the rate of radiation-induced charge jumps compared to surface tests, the observed rate remains higher than expected from ambient gamma reduction alone, yet allows for over 22 hours of operation with zero correlated jumps at millimeter scales.
This paper introduces the Wasserstein normalized autoencoder (WNAE), a novel unsupervised anomaly detection model that minimizes the Wasserstein distance between the training data and a Boltzmann distribution of reconstruction errors to effectively identify semivisible jets at the CERN LHC while overcoming the outlier reconstruction failures common in standard autoencoders.
This paper proposes a Hybrid Quantum Machine Learning framework that integrates parameterized quantum circuits with classical neural networks to significantly enhance the sensitivity of double Higgs boson searches in the channel at the LHC, outperforming both state-of-the-art classical and purely quantum models in constraining production cross-sections and coupling parameters.
This paper reports the successful development and test-beam validation of a prototype LYSO-based active converter for future experiments, demonstrating a time resolution of 25 ps and a light yield of photoelectrons that significantly exceed the design requirements for detecting 52.8 MeV photons.