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.
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 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.
The ALICE Collaboration measured the inclusive production cross section of isolated prompt photons in pp and p-Pb collisions at various LHC energies, observing a low-transverse-momentum suppression in p-Pb collisions consistent with nuclear shadowing effects predicted by perturbative QCD.
The ALICE collaboration at the LHC has provided model-independent evidence that approximately 90% of deuterons and antideuterons in high-energy proton-proton collisions are formed via nuclear reactions following the decay of short-lived resonances, thereby resolving a key gap in understanding light (anti)nuclei production in ultra-relativistic environments.
The paper proposes CARAMEL, a compact and scalable axion dark matter detection strategy that utilizes electro-optic crystals and externally injected radio-frequency power to amplify and optically read out axion-induced ellipticity modulations in the 0.5–50 GHz range, thereby enabling high-sensitivity searches across the preferred post-inflationary Peccei–Quinn axion mass parameter space.
The ALICE experiment measured the transverse momentum spectra and integrated yields of anti- hyperons in pp and p-Pb collisions at TeV using a novel antineutron reconstruction method, finding that while multiparton-interaction models best describe the high- spectra, all tested models reproduce the total yields and nuclear modification factors within uncertainties.
This paper reports on the multiplicity dependence of f(980) production in pp collisions at TeV using the ALICE detector, finding that yield ratios decrease with increasing multiplicity and that thermal model comparisons suggest the f(980) does not contain significant hidden strangeness.