2160 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 LHCb data from 2015–2018, researchers observed the first evidence of CP violation in beauty baryon decays to charmonium, measuring a combined asymmetry difference of with a significance of .
Researchers at the China Spallation Neutron Source successfully developed and validated an eV-range polarized neutron system using an in-situ He Spin-Exchange Optical Pumping filter and solenoidal guide field, achieving a measured parity violation asymmetry of % at the 0.747 eV resonance of La to support future Time-Reversal Invariance Violation studies.
This paper presents a hardware-aware model-compression workflow for a GNN-based hit-filtering algorithm deployed on FPGAs in the Belle II Level-1 trigger, achieving a reduction in computational cost by over two orders of magnitude through techniques like 4-bit fixed-point arithmetic and pruning while maintaining high hit efficiency and background rejection performance.
This paper presents the first measurement of jet axis decorrelation in photon-tagged jets from PbPb and pp collisions at 5.02 TeV, revealing a narrowing effect for high-transverse-momentum jets in central PbPb collisions that is compared against theoretical models of parton energy loss in the quark-gluon plasma.
This paper proposes and validates a robust, general-purpose Bayesian method for averaging inconsistent data sets by treating input uncertainties as lower bounds to better handle outliers, demonstrating its effectiveness across various scientific domains and providing a freely available Python implementation.
This ALICE study introduces the new observable to measure long-range transverse momentum correlations in Pb-Pb collisions at 5.02 TeV, revealing mass-dependent flow patterns consistent with hydrodynamics and quark recombination while demonstrating its sensitivity to bulk viscosity and the equation of state for constraining the properties of strongly interacting matter.
This paper provides practical recommendations and considerations from researchers across major particle physics experiments on adopting emerging machine learning-based unbinned unfolding techniques to replace traditional binned histogram methods for more flexible, high-dimensional data analysis.
This paper presents a next-to-leading order QCD calculation of diboson production with leptonic decays and definite polarization states within the SMEFT framework, matched to parton showers to enable precise polarization-template and quantum-tomography analyses at the LHC.
This paper presents the design and characterization of a dual-readout photosensor system using Hamamatsu R8520-406 PMTs that successfully mitigates cosmic muon saturation to enable the RELICS experiment to detect coherent elastic neutrino-nucleus scattering signals at the surface level.
This paper presents a fully differential next-to-next-to-leading order QED calculation of the process, implemented in the McMule framework to enable precise luminosity measurements for electron-positron colliders with center-of-mass energies up to a few GeV.