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.
Using 140 fb of 13 TeV proton-proton collision data collected by the ATLAS detector, this paper presents the most precise measurement to date of the meson effective lifetime and its associated decay width parameters, all of which are consistent with theoretical predictions and results from other experiments.
By incorporating spin-induced orbital precession into gravitational-wave searches for the first time, this study significantly improves detection sensitivity for neutron star-black hole binaries, leading to a 16% downward revision of their estimated merger rate and the identification of four new subthreshold candidates likely of terrestrial origin.
This paper presents the first measurement of transverse momentum-dependent radial flow fluctuations in Pb+Pb collisions using the ATLAS detector, providing experimental evidence for the collective nature of radial flow and demonstrating its sensitivity to the quark-gluon plasma's bulk viscosity.
This paper challenges the common assumption that nuclear modifications do not exist in the longitudinal-transverse structure-function ratio by demonstrating theoretically and numerically that nucleon transverse motion within nuclei induces such modifications, particularly in medium- and large- regions, which are crucial for precise nucleon structure function determination and future investigations of gluon dynamics.
This paper proposes a novel unsupervised anomaly detection method for the Large Hadron Collider that utilizes lightweight, encoder-based LLM-like networks trained on masked-token prediction to identify new physics signals, such as four-top-quark production, by detecting deviations in background event reconstruction without prior knowledge of signal characteristics.
This paper presents a robust Bayesian method for measuring proton beam energy at a medical cyclotron using the stacked foil technique and V activity, demonstrating its accuracy, uncertainty handling, and suitability for diverse experimental conditions without relying on direct charge measurements.
This paper presents a new global fit for the liquid argon nuclear-recoil ionization yield using data from multiple experiments, which refines the Thomas-Imel box model by favoring the Lenz-Jensen screening potential and significantly improves the sensitivity of the DarkSide low-mass WIMP search program.
This paper demonstrates that Drell-Yan production of light vector boson mediators significantly enhances the sensitivity of fixed-target experiments like SBND, DarkQuest, DUNE ND, and SHiP to detect Heavy Neutral Leptons, potentially reaching Type-I Seesaw mixing parameters and probing new gauge couplings in various B-L and B-3L models.
This paper reviews the performance, calibration, and resilience of key physics objects in CMS Run 3 at 13.6 TeV, highlighting the deployment of transformer-based algorithms for heavy-flavor jet identification and boosted resonance reconstruction under high pileup conditions.
This paper demonstrates that clipping Effective Field Theory (EFT) simulations at the new physics scale via an invariant mass cut () is insufficient to guarantee EFT validity across different observables and operator orders, while also highlighting the risks of introducing model-dependent form factors and proposing alternative transverse mass cuts for more robust sensitivity studies.