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.
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.
The DAMSA conceptual design white paper proposes a novel short-baseline accelerator experiment utilizing the PIP-II LINAC to probe MeV-to-sub-GeV dark-sector messengers and rare Standard Model signals by overcoming beam-dump sensitivity limits with a compact detector, a strategy whose feasibility will be validated through the proposed Little DAMSA Path-Finder (LDPF) proof-of-concept experiment.
Using the full Run-2 dataset of proton-proton collisions at 13 TeV collected by the ATLAS detector, this paper presents the first evidence of simultaneous production with a significance of 4.4, observing eight events against a background of 0.92 and measuring a fiducial cross-section consistent with Standard Model predictions.
The LHCb experiment reports the world's first measurement of separate polarizations for and baryons produced in Ne collisions at GeV, finding a significant positive polarization for and a consistent-with-zero value for .
This paper introduces IJazZ2.0, a novel analytical likelihood-based method implemented in the IJazZ software that enables computationally efficient, unbiased, and robust simultaneous extraction of lepton (and photon) energy scale and resolution corrections across multiple categories by leveraging exact smearing treatments and automatic differentiation.
Using 138 fb of proton-proton collision data at = 13 TeV collected by the CMS detector, this paper presents a measurement of five event shape variables derived from charged particles inside jets, showing general agreement between the corrected distributions and various theoretical predictions for multijet production.
This whitepaper outlines a community vision for building a national-scale, AI-native research ecosystem that leverages current and future experimental facilities to accelerate discovery in experimental particle physics through transformative artificial intelligence integration.
This paper presents the first measurements of dielectron production in proton-proton and proton-lead collisions at = 5.02 TeV using the ALICE detector, determining charm and beauty cross sections in pp collisions and finding that the pPb results are consistent with expectations without nuclear matter effects while providing the first direct comparison of these systems via the nuclear modification factor .
By modeling resonance decay effects on pion and kaon-proton correlations in 13 TeV pp collisions, this study demonstrates that a universal, collectively scaling primordial emission source exists for all hadron species in small collision systems at the LHC.