1434 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 presents a systematic study of atmospheric neutrino-antineutrino discrimination in large liquid-scintillator detectors by analyzing event characteristics such as inelasticity and neutron multiplicity, thereby establishing a foundation for determining the neutrino mass ordering.
This paper applies quantum estimation theory to demonstrate that while flavor measurements are information-theoretically optimal for determining neutrino mixing angles at the first oscillation maximum, they are suboptimal for the CP-violating phase , which is intrinsically less encoded in the neutrino state and requires strategies like the ESSSB facility to improve sensitivity, though current experimental precision remains far from fundamental quantum limits.
This study utilizes FLUKA simulations to optimize the geometry and material of an 8 GeV proton beam target within a 5 T solenoid for a muon collider demonstrator, balancing secondary particle yield and emittance against thermal limitations to guide future front-end system designs.
Using 205.4 kg·day of data from the CDEX-10 experiment with a 160 eVee threshold, the study reports the first search for sub-MeV fermionic dark matter absorption on germanium electrons, finding no significant signals and setting new upper limits on the DM-electron interaction cross section for vector and axial-vector interactions in the 0.1–10 keV/ mass range.
This paper proposes LAYCAST, a novel detector concept installed on the cavern walls and ceiling of future electron-positron colliders like CEPC and FCC-ee, to significantly extend the sensitivity for detecting various long-lived particles beyond the reach of main experiments by leveraging detailed simulations and effective background suppression.
This paper forecasts that the upcoming Cherenkov Telescope Array Observatory (CTAO) will be capable of definitively testing the minimal dark matter paradigm by potentially excluding all real WIMP representations up to the SU(2) 11-plet, and possibly the 13-plet, through 500 hours of Galactic Center observations.
This paper demonstrates that a team of large language model (LLM) agents can autonomously generate code to solve complex particle physics data analysis tasks, specifically anomaly detection on the LHC Olympics dataset, achieving performance comparable to human state-of-the-art results.
This paper demonstrates that NLO calculations are essential for achieving reliable predictions of the irreducible gluon-fusion background to vector boson fusion Higgs production, while providing consistent simulation setups to resolve discrepancies among existing event generators.
Using a sample of 2.7 billion events collected by the BESIII detector, this study reports no significant evidence for a 17 MeV/ gauge boson or dark photons in charmonium transitions, establishing new upper limits on the charm quark coupling strength and the photon-dark photon mixing parameter.
This paper summarizes recent updates to Standard Model Higgs-boson decay calculations, including NLO mass effects for , precise branching fractions for the strange-Yukawa induced channel, and new results on Dalitz decays that are crucial for determining the strange-Yukawa coupling at future colliders and the LHC.