547 papers
Nucl-Ex represents the dynamic frontier where scientists probe the fundamental building blocks of matter through high-energy experiments. By smashing particles together at incredible speeds or observing rare cosmic events, researchers uncover the forces that govern our universe and test the limits of our current understanding of physics.
At Gist.Science, we ensure these breakthroughs reach a broader audience by processing every new preprint in this field directly from arXiv. For each study, we provide both a clear, plain-language explanation of the core discoveries and a detailed technical summary for those seeking deeper insights. Below are the latest papers in nuclear experiment research, curated to help you stay informed on the latest developments from the lab.
The BABY 1L experiment successfully benchmarked tritium breeding in a scaled-up molten salt system under DT neutron irradiation, demonstrating a six-fold improvement in breeding ratios over previous tests, validating OpenMC simulations, and identifying diffusion-limited transport and hydrogen-facilitated release as key mechanisms for future fusion power plant designs.
Using a sample of events collected by the BESIII detector, this study reports the first observation of the antihyperon-nucleon annihilation processes and , measures their cross sections, and provides evidence for the resonance in the spectrum.
This paper details the design, calibration, and performance of the STAR experiment's endcap Time-of-Flight (eTOF) detector, which was adapted from the CBM experiment to provide essential particle identification for the fixed-target phase of the Beam Energy Scan II, achieving a time resolution of approximately 70 ps and a 70% efficiency.
New high-precision measurements of the helicity-dependent cross sections for protons and deuterons in the 200–1400 MeV photon energy range, obtained at the MAMI facility, have been used to verify the Gerasimov-Drell-Hearn sum rule for the proton, neutron, and deuteron while providing a critical benchmark for theoretical models of nucleon structure.
Using Monte Carlo simulations of two-dimensional two-state and three-state Potts models, this study investigates the hierarchy of higher-order cumulant ratios near criticality and finds that, contrary to theoretical predictions for QCD, the specific ordering observed by the STAR experiment does not generically emerge in these finite statistical systems undergoing second-order phase transitions.
This paper presents a 63-day cosmic-ray scattering experiment using Resistive Plate Chambers to simultaneously measure secondary cosmic-ray composition with high precision and establish stringent constraints on muon-philic dark matter scattering cross-sections.
This paper presents progress in studying unstable states during the relativistic dissociation of light nuclei in nuclear emulsion, utilizing precise invariant mass measurements to identify specific excited states in carbon and oxygen decays, estimate contributions in nitrogen dissociation, and explore new channels beyond alpha-particle clustering.
This paper demonstrates for the first time that neural simulation-based inference (NSBI) can effectively constrain proton parton distribution functions using high-dimensional, unbinned LHC data, achieving significantly improved precision over traditional binned analyses by fully exploiting statistical power and reducing reliance on coarse uncertainty approximations.
This study determines the properties of key resonances in Ne using experimental angular distributions and theoretical modeling to refine the F()O reaction rate, revealing that previous estimates significantly underestimated the associated uncertainties for classical nova positron production.
The BM@N experiment at JINR measured transverse momentum spectra and rapidity distributions of hyperons produced in carbon-nucleus collisions at 4.0A and 4.5A GeV, comparing the results with various theoretical transport models and existing experimental data.