449 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.
This paper presents a direct measurement of the CuNi reaction cross section using the MUSIC detector at FRIB, which, combined with Bayesian model averaging, yields a revised astrophysical reaction rate that is systematically lower than previous evaluations and establishes the competing channel as the dominant uncertainty in the NiCu cycle.
This paper presents a high-precision, cost-effective laboratory technique using Associated Particle Imaging to measure neutron-induced gamma-ray production cross sections at 14 MeV, demonstrating its capability through proof-of-concept experiments on iron and carbon samples with uncertainties dominated by counting statistics that can be further reduced.
This paper presents a theoretical study using the TRENTo3D and CLVisc models with a novel initial longitudinal flow gradient to simultaneously describe STAR's global and azimuthal hyperon polarization measurements in isobaric Zr+Zr collisions, revealing that the azimuthal modulation is dominantly driven by shear effects while highlighting the challenges in achieving a unified description of all polarization observables.
This paper proposes that measuring the frequency of the asteroseismic crust-core interface mode in neutron stars, via resonant shattering flares or tidal resonances, can determine stellar radii to within 5–10% with minimal dependence on inner core physics, provided that low-density nucleonic matter is well-constrained.
This whitepaper proposes the Hyperon-Nucleon Spectrometer (H-NS) at the High-Intensity heavy-ion Accelerator Facility (HIAF) to systematically investigate the unresolved polarization puzzle through high-precision measurements of hyperon and proton spin observables across a wide range of collision energies and systems.
This study presents detailed projections demonstrating that the Electron-Ion Collider in China (EicC) can precisely measure pion and kaon structure functions via the Sullivan process with statistical uncertainties below 5% and 8%, respectively, thereby significantly advancing our understanding of meson parton distributions and bridging the gap between fixed-target and collider-era measurements.
A new direct measurement of the CuNi reaction using the MUSIC detector at FRIB reveals a systematically lower stellar rate than previously estimated, which significantly suppresses Ni-Cu cycle recycling in X-ray bursts while enhancing the efficiency of the p process in supernova nucleosynthesis.
This paper presents Simphony, a GPU-accelerated optical photon Monte Carlo tool that achieves a ~1000-fold speedup over Geant4 while maintaining subpercent accuracy in photon detection metrics, thereby enabling practical large-scale optical simulations for noble liquid detector development and machine learning applications.
This study investigates low and medium spin excitations in Nd isotopes using Gammasphere data to identify 159 new levels and 305 new transitions, providing insights into emerging quadrupole collectivity and the role of the 11/2[505] neutron extruder in the A150 phase transition region.
By performing Bayesian inference on neutron star data from gravitational waves and X-ray observations alongside theoretical constraints from chiral effective field theory and perturbative QCD, this study finds evidence favoring a strong first-order phase transition in dense matter that likely occurs above the central density of the most massive neutron stars, thereby reconciling the need for a stiff equation of state with asymptotic softening.