1442 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 model-independent dark photon search strategy using spectral shape differences in photon production from decays, demonstrating via GEANT4 simulations that a 1 GeV proton beam with tungsten foils could probe previously unexplored parameter space for dark photons with predominantly invisible decays.
This paper utilizes Light Cone Sum Rules with twist-6 contributions to calculate the branching fraction of the decay, thereby determining the allowed mass range for the dark antibaryon consistent with -mesogenesis constraints from BaBar and Belle experimental data.
This paper demonstrates that both zero-latency filtering and a novel "inpainting" technique can successfully identify massive black hole binary mergers in realistic LISA datasets, even in the presence of data gaps and overlapping signals, thereby enabling critical pre-merger sky localization for multi-messenger observations.
This paper presents an exhaustive simulation flow that integrates TCAD, Allpix Squared, and SPICE to accurately predict the performance of monolithic active pixel sensors (MAPS), including leakage currents and irradiation effects, and validates this methodology against measurements from the Belle II TJ-Monopix2 sensor.
The ATLAS experiment analyzed 140 fb of 13 TeV and 56 fb of 13.6 TeV proton-proton collision data to search for charginos and neutralinos decaying via -parity-violating couplings into Higgs bosons and leptons, finding no evidence of new physics and setting 95% confidence level exclusion limits on chargino and neutralino masses up to 1100 GeV.
Using 2016–2017 COMPASS data from muon scattering on a liquid hydrogen target, this study extracts amplitudes of azimuthal modulations in unpolarised semi-inclusive deep inelastic scattering, employing a new background subtraction method for diffractive vector mesons to present results that qualitatively agree with earlier findings on isoscalar targets.
This paper generalizes the concept of a "beam-dump ceiling" that limits sensitivity improvements for fast-decaying mediators in traditional experiments and argues that compact, short-baseline tabletop experiments are the optimal solution to access this previously unreachable parameter space.
This paper demonstrates that incorporating timing information into LHC searches for new physics, specifically interactions involving ultralight dark matter and quarks, can enhance sensitivity by up to a factor of two compared to traditional methods that assume time-invariant signals.
This paper proposes a novel ultra-broadband axion dark matter experiment utilizing a dc SQUID operated at a flux sweet spot with lock-in modulation to achieve unprecedented sensitivity to axion-photon coupling across a mass range spanning over 15 orders of magnitude.
Using 20.3 fb⁻¹ of data from the BESIII detector, this study presents the first amplitude analysis of the decay, measuring its branching fraction and determining a relative branching fraction for versus that is significantly lower than previous world averages but consistent with isospin expectations.