2503 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 novel search strategy at the High-Luminosity LHC for axion-like particles produced in association with electroweak gauge bosons, demonstrating that exploiting recoil and polarization features significantly enhances sensitivity to ALP couplings and enables discrimination between ALP and Higgs-like signals.
This paper applies the Born-Oppenheimer effective field theory, a unified QCD-based framework derived from scale separation and symmetries, to describe the dynamics of ordinary and exotic hadrons containing two heavy quarks, specifically analyzing the , , and their bottom counterparts to elucidate the patterns of XYZ exotic states.
The BESIII experiment presents a review of recent searches for rare and symmetry-violating decays in charmonium and open-charm systems, including weak decays, flavor-changing neutral currents, and lepton flavor violation, finding no significant signals while setting improved limits that constrain various theoretical models.
This paper introduces HybridMC, a fast and detailed simulation framework for the LHCb ECAL Upgrade II that decouples energy deposition from optical photon transport using parametrized probability density functions, achieving a CPU speedup of over two orders of magnitude while maintaining statistical agreement with full ray-tracing simulations and test-beam data.
This study utilizes a light-front quark model incorporating quark-meson coupling effects to demonstrate that the internal structure of pseudoscalar mesons, specifically their distribution amplitudes and parton distribution functions, undergoes significant medium-induced modifications in nuclear matter, characterized by suppressed intermediate- distributions and enhanced Gegenbauer coefficients that qualitatively resemble the EMC effect.
Using 138 fb of 13 TeV proton-proton collision data from the CMS experiment, this study presents off-shell Higgs boson measurements in the four-lepton channel that establish the first direct limits on composite Higgs models, provide the first off-shell constraint on the Higgs self-coupling, yield the tightest model-independent constraints on light-quark Yukawa couplings, and determine the Higgs boson width to be 5.1 MeV while excluding the absence of off-shell production with over 5 standard deviations.
This paper proposes that parton-level differential polarization fractions serve as optimal observables for maximizing sensitivity in vector-boson polarization measurements, a method demonstrated in inclusive ZZ production that can be learned by neural networks to combine model-independent fiducial cross-section analysis with the best achievable sensitivity for detecting new physics.
This paper utilizes encoder-decoder sequence-to-sequence deep neural networks trained on LHC Open Data from 2016 to 2018 to effectively predict the time evolution of radiation damage in the CMS electromagnetic calorimeter's lead tungstate crystals.
This paper demonstrates that angular observables in the rare decay of polarized baryons to provide unique access to orthogonal Wilson coefficient combinations and CP-violating phases, thereby resolving parameter degeneracies and enabling a complete characterization of new physics in transitions that is inaccessible in mesonic decays.
This paper presents a study of simultaneous measurements of Higgs boson decay rates to WW and ZZ in fully hadronic six-jet final states at FCC-ee, demonstrating that with an integrated luminosity of 10.8 ab⁻¹ at 240 GeV, the production cross section times branching fraction can be determined with relative uncertainties of 1.48% and 8.20% for the H→WW and H→ZZ channels, respectively.