1429 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 a model utilizing vector-like quarks and scalar messengers with hierarchical vacuum expectation values to explain the quark mass hierarchy and generate the CKM matrix independently of fermion masses, thereby addressing the Standard Model's inability to account for flavor structure.
Using a novel event shape selection method to suppress elliptic flow backgrounds in Au+Au collisions across the RHIC Beam Energy Scan, this study reports a statistically significant residual charge separation at intermediate energies (11.5–19.6 GeV) that may indicate the chiral magnetic effect, while finding consistent-with-zero results at lower and higher energies.
This paper computes the properties of toponium states and evaluates their discovery prospects at the HL-LHC and FCC-ee, highlighting the superior sensitivity of lepton colliders for detecting the vector state while noting the challenges in observing -wave resonances and the potential for these measurements to probe top-quark properties and new physics.
This paper proposes a novel, theoretically robust method for probing gluon linear polarization by analyzing characteristic azimuthal modulations in single- and two-point energy-energy correlators within jets, utilizing an all-order CCFM formalism to offer an experimentally accessible alternative to conventional techniques.
This paper introduces the "Kink Finder," a specialized track-finding algorithm for the Belle II experiment that significantly outperforms standard methods by achieving a 40% reconstruction efficiency for in-flight particle decays and scattering, while also improving track parameter resolution and reducing misidentification rates.
This paper demonstrates that while the Krauss-Nasri-Trodden (KNT) model can satisfy low-energy experimental constraints, a significant portion of its viable parameter space is ruled out by vacuum stability conditions when renormalization group effects are considered, leaving most of the remaining region testable through future charged lepton flavor violating experiments.
This paper summarizes recent advancements in using constituent-based machine learning architectures, such as graph neural networks and transformers, to classify hadronic final states in the ATLAS Experiment, detailing their performance on simulated and real data while outlining future directions for data-driven and model-independent tagging strategies.
This paper presents an all-electron framework implemented in the open-source code QCDark2 that incorporates random-phase approximation dielectric screening with local field effects to accurately predict dark matter-electron scattering rates across various target materials, demonstrating that these effects significantly modify recoil spectra and detection sensitivities for both non-relativistic and boosted dark matter.
This paper proposes a novel collider-based test for the unitarity of the PMNS mixing matrix by exploiting anomalous cross-section growth from incomplete cancellation between -channel neutrino and -channel gauge-boson exchanges, deriving model-independent bounds from LEP-II data and projecting future sensitivities for lepton and hadron colliders.
Using 8.4 fb of LHCb data, this study performs an amplitude analysis of the decay to simultaneously determine local and nonlocal amplitudes across the full dimuon mass spectrum, revealing that the compatibility of Wilson coefficient combinations with the Standard Model varies between 1.6 and 4 depending on the chosen form factors.