1387 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 reviews recent STAR experiment results on net-proton multiplicity fluctuations from RHIC BES-II collisions to search for the QCD critical point by comparing fourth-order cumulant and factorial cumulant ratios with non-critical theoretical models while addressing initial volume fluctuations and outlining future research directions.
This paper demonstrates that Parnassus, a generative AI model originally developed for LHC experiments, can successfully simulate and reconstruct data for the historical ALEPH detector at LEP, offering a viable solution for legacy data analysis where traditional software is difficult to maintain.
This paper proposes that the suppression of heavy quarkonium polarization at high transverse momentum arises from environment-induced decoherence, where the stochastic chromo-electric field within fragmenting jets drives the spin state toward a maximally mixed state via a Lindblad framework, thereby resolving the long-standing polarization anomaly through a -dependent quenching mechanism.
This paper proposes that the enhanced Higgs quartic coupling required for radiative electroweak symmetry breaking naturally emerges from SO(10) grand unification, where portal couplings to heavy GUT scalars generate the necessary enhancement factor to align the Standard Model's UV Landau pole with the GUT scale, thereby providing a dynamical origin for both symmetry breaking and the electroweak-GUT hierarchy.
This paper investigates the production and prompt decay of axion-like particles (ALPs) with lepton-flavour-violating couplings in the mass regime above the muon threshold, proposing new search strategies across meson, gauge boson, quarkonium, and tau decays to leverage the distinctive signature and assess the discovery potential of future high-energy and fixed-target experiments.
This paper demonstrates that the OmniLearned particle physics foundation model, pre-trained on high-energy collision data, can be effectively transferred to low-energy fixed-target neutrino experiments to outperform models trained from scratch on tasks like energy regression and pion classification, thereby validating the potential for detector-agnostic inference across vastly different energy scales and physics processes.
Using a dataset of 2.7 billion events collected by the BESIII detector, researchers observed the exotic state in the decay with a statistical significance exceeding , determining its mass, width, and branching fraction product.
This paper utilizes QCD light-cone sum rules to calculate the electromagnetic multipole moments of -type strange hidden-charm pentaquarks, revealing distinct magnetic dipole, electric quadrupole, and magnetic octupole signatures that depend on diquark structure and provide key discriminants to differentiate between compact pentaquark and molecular interpretations.
This paper presents a validated comprehensive purity evolution model that incorporates non-uniform impurity transport mechanisms to project the purification performance for the upcoming RELICS-10 and RELICS-50 dual-phase liquid xenon detectors designed to search for reactor-induced coherent elastic neutrino-nucleus scattering.
Using 5.1 fb⁻¹ of proton-proton collision data at 13 TeV collected by the LHCb detector, this study presents the most precise measurement to date of the muon charge asymmetry from W-boson decays in the forward region, which aligns excellently with next-to-next-to-leading-order perturbative QCD predictions.