2517 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 TESSERACT Collaboration reports the first limits on light dark matter interactions between 44 and 87 MeV/ using a low-threshold, two-channel athermal phonon silicon detector operated above ground, achieving the most stringent constraints to date for this mass range and the lowest mass ever probed in direct detection experiments.
This paper presents a comprehensive environmental characterization of the Bedretto tunnel in Switzerland, demonstrating that its deep overburden, ultra-low background radiation, and exceptionally low seismic and magnetic noise levels make it a highly competitive and accessible site for next-generation fundamental physics experiments, including gravitational-wave detection.
The XENONnT collaboration reports a blinded search for light dark matter using 7.8 tonne-year of ionization-only data, finding no significant excess over background and setting improved 90% confidence level upper limits on various dark matter interaction cross-sections that push sensitivity closer to the irreducible neutrino background.
This paper examines the growth and impact of the ATLAS Collaboration's Virtual Visits programme since 2010, highlighting its success in bridging the gap between particle physics research and global audiences through live, interactive, and language-accessible tours, as evidenced by quantitative data and case studies from Brazil and Greece.
This paper demonstrates an end-to-end solution for deploying ultra-low-latency, radiation-hard machine learning on FPGAs by developing a lightweight autoencoder for the PicoCal calorimeter, implementing a hardware-aware quantization strategy, and extending the hls4ml library with a new backend for Microchip PolarFire devices to achieve 25 ns latency.
This paper reports on the implementation and performance of the VORTEX cavity, a loss-less, vertically-cut resonant tunable axion haloscope centered at 8.5 GHz with an 800 MHz tuning range, which has been experimentally validated at millikelvin temperatures and is prepared for use in the upcoming RADES data-taking campaign.
This paper presents a Particle Transformer-based framework that leverages large-scale pre-training on Monte Carlo simulations to learn transferable event representations for charmed baryon physics at BESIII, demonstrating significant improvements in event classification and momentum-direction regression across various decay channels, particularly in low-statistics regimes.
Using a data sample collected by the BESIII detector at a center-of-mass energy of 4682 MeV, this study reports the observation of a charged charmoniumlike structure, tentatively identified as the with near the threshold, and simultaneously provides updated measurements for the masses and widths of the , , and charmed mesons.
This paper investigates the production of dark-photon dark matter from quantum fluctuations during Starobinsky inflation, demonstrating that the Weyl transformation-dependent variation of the longitudinal mode's kinetic function significantly impacts the relic abundance and constrains the dark-photon mass to the range of 5.6–7.4 μeV to match observed dark matter density.
This paper investigates rare energy loss processes for ultrahigh-energy tau leptons, specifically muon pair and Primakoff pion production, finding that while their overall energy loss contributions are negligible compared to electron pair production, the short interaction length of dimuon emission makes it a potentially valuable signature for identifying tau neutrinos in Cherenkov telescopes.