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 demonstrates a novel "tuning-by-opening" mechanism for a NbSn superconducting microwave cavity that achieves continuous frequency tuning exceeding 1 GHz while maintaining a high quality factor suitable for dark matter searches, all without inserting elements into the resonant volume.
Using 137 fb of 13 TeV proton-proton collision data from the ATLAS detector, this study searches for long-lived charginos and -sleptons via disappearing tracks and sets 95% confidence level lower mass limits of up to 880 GeV for wino charginos and 320 GeV for -sleptons, finding no significant excess over Standard Model background predictions.
Using 140 fb⁻¹ of proton-proton collision data at 13 TeV collected by the ATLAS detector, this study searches for Higgs boson decays into pairs of low-mass pseudoscalars that subsequently decay into four tau leptons, finding no significant excess over Standard Model backgrounds and setting 95% confidence level upper limits on the branching fraction between 0.06 and 0.23 for pseudoscalar masses ranging from 15 to 60 GeV.
This paper proposes and demonstrates a constrained end-to-end differentiable framework for High-Energy Physics trigger systems that jointly optimizes all processing stages against a unified physics objective, achieving a 2-4x improvement in true-positive rates for Higgs boson pair production while maintaining interpretability and calibration constraints.
This paper calculates enhanced electroweak, QCD, and QED radiative corrections to the nucleon coupling constants and , providing updated relations between lattice-QCD and physical values that yield a total correction of approximately 3.5% to 5.6% and predict a physical axial charge of 1.265(26) or 1.240(9) depending on the input methodology.
Using 9 fb of LHCb $pp$ collision data, this study reports the first observation of the decay and provides improved measurements of branching-fraction ratios for various charmless three-body decays.
This paper characterizes and upgrades a hybrid quantum-classical graph neural network for charged particle track reconstruction in high-luminosity LHC environments, demonstrating improved training convergence and behavior through the integration of parametrized quantum circuits.
This paper proposes that quantum sensors can detect bursts of ultralight bosonic fields emitted during violent astrophysical events, thereby establishing a new multimessenger astronomy channel that remains viable even when accounting for matter screening effects.
This paper proposes a scalable Heterogeneous Graph Neural Network (HGNN) that employs a multi-task learning paradigm to simultaneously perform particle vertex association and graph pruning, thereby significantly improving beauty hadron reconstruction performance and inference efficiency for complex particle collision events at the Large Hadron Collider.
This study utilizes PYTHIA 8 and EPOS-LHC models to demonstrate that particle-identified balance functions in 13 TeV proton-proton collisions exhibit distinct dependencies on event multiplicity and spherocity, revealing that while PYTHIA 8 reflects fragmentation-dominated dynamics, EPOS-LHC captures collective effects like radial flow and diffusion that mimic heavy-ion behavior, thereby offering a powerful tool to disentangle hadronization mechanisms and medium-like collectivity in small collision systems.