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 forward detector design utilizing silicon strips and LYSO crystals for future e+e- colliders to precisely detect radiative photons in Bhabha scattering events, thereby enabling the validation of higher-order QED corrections and improving luminosity measurements.
Using a sample of events collected by the BESIII detector, this study reports the first observations of the decays and measures their branching fractions, finding no significant intermediate structures in the relevant mass distributions.
This paper proposes a modular inverse seesaw model that unifies lepton flavor physics with high-recoil inelastic dark matter, demonstrating that a common complex modulus can simultaneously satisfy neutrino oscillation data and predict a TeV-scale pseudo-Dirac fermion with a keV mass splitting that aligns with extended LUX-ZEPLIN nuclear-recoil analyses.
This paper presents an optimized binning scheme for the Dalitz plot, derived using Fisher information and simulated annealing, which enhances the statistical sensitivity to the CKM angle by approximately 10% compared to a standard equal-phase-difference baseline while maintaining robustness against experimental effects.
This paper presents a novel hybrid approach for CMS track reconstruction that utilizes Line Segment Tracking objects as inputs to a Transformer-based machine learning model, achieving comparable efficiency to traditional methods while significantly reducing fake rates and duplicates in high-pileup HL-LHC conditions.
This paper presents new measurements of lepton-flavour universality ratios and angular observables in semileptonic decays from the Belle and Belle II experiments, which, while individually consistent with Standard Model expectations, collectively contribute to the ongoing tension between experimental world averages and theoretical predictions.
This paper presents the first experimental demonstration of muon scattering tomography applied to biological soft tissue, successfully reconstructing the three-dimensional density of an anthropomorphic thorax phantom using a 2 GeV/c muon beam at CERN with percent-level accuracy.
This paper systematically evaluates the performance of various NLO Monte Carlo event generators against analytical and dedicated simulation tools for neutrino and muon deep-inelastic scattering at the LHC, quantifying the impact of theoretical uncertainties and demonstrating their applicability to FASER and SND@LHC experimental data.
This paper provides a theory-focused overview of charged-lepton flavor violation as a key probe for physics beyond the Standard Model, while summarizing the current experimental landscape and explaining how various measurements can diagnose the underlying new physics.
This paper demonstrates that a Muon Collider can serve as a high-statistics neutrino source capable of detecting over a million neutrino trident events and one hundred thousand W-boson production events using a compact silicon target, thereby enabling the first observation of these processes and providing constraints on new physics and photon distributions that surpass current DUNE projections.