1434 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 proposes that spinning black holes in the Milky Way can act as persistent "scalar sirens" by ejecting light scalar particles via superradiant instability, thereby generating a detectable, high-velocity scalar background that offers a novel, independent probe of isolated black hole populations and scalar field properties.
This paper presents a comprehensive study of heavy flavor baryon spectroscopy using a quark-diquark effective mass formalism under two interaction scenarios, successfully predicting the masses of various states that align well with experimental and lattice QCD data by incorporating constituent masses, hyperfine interactions, and a mass-dependent binding energy term.
This paper proposes and analyzes a novel "synchrotron radiation power leveling" strategy for the Future Circular Collider (FCC-hh), where beam energy is dynamically adjusted during a physics store to manage heat loads from synchrotron radiation, thereby increasing both peak and integrated luminosity and significantly boosting the production rates of key physics processes like di-Higgs events.
This paper reviews the theoretical advantages and experimental progress in studying exotic hadrons associated with the -quark, highlighting the unique capabilities of the Belle, Belle II, and LHCb experiments to explore states like , , and within a more reliable theoretical framework than charmonium-like systems.
This paper utilizes functional QCD to determine QCD freeze-out conditions by matching theoretical baryon number susceptibilities with experimental proton cumulants, successfully predicting kurtosis values that agree with data and revealing a peak structure near 5 GeV indicative of a critical end point.
This paper presents the design, production, and comprehensive optical characterization of novel light-pulse driver circuits and self-monitoring calibration instruments (both directional pulsers and isotropic P-CAL modules) developed for the Pacific Ocean Neutrino Experiment, demonstrating their high-intensity, nanosecond-scale performance and near-perfect optical isotropy through simulations and experimental validation in air and water.
This paper investigates the substructure of quark and gluon jets in photoproduction events at the proposed Electron-Ion Collider using PYTHIA simulations and jet-shape variables, demonstrating the feasibility of distinguishing between these jet types to establish a baseline for future QCD studies.
This paper synthesizes new threshold measurements of production from JLab experiments (007 and CLAS12) with previous GlueX data to confirm a consistent phenomenological determination of the -proton scattering length, while highlighting how upcoming J-PARC measurements will further clarify the systematic trend of vector meson-nucleon interactions predicted by the "young vector meson" hypothesis.
This paper extracts the speed of sound in the quark-gluon plasma from ATLAS transverse momentum fluctuation data in ultra-central Pb+Pb collisions by correcting for detection biases and hadronization noise, yielding a result of that aligns perfectly with first-principles lattice QCD calculations.
This paper demonstrates that simulation-based inference (SBI) is a viable and potentially superior alternative to traditional empirical tuning for determining neutrino interaction model parameters, as it successfully reproduces and slightly improves upon the MicroBooNE collaboration's tuned GENIE configuration while also approximating the NuWro simulation.