555 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.
Using high-precision mass measurements of proton-rich Rh, Pd, and Cd isotopes near the doubly magic Sn nucleus, this study significantly refines nuclear mass models and demonstrates that these new data reduce abundance uncertainties in X-ray burst simulations while shifting reaction flows toward production and suppressing heavier nucleosynthesis.
This study demonstrates that in intermediate-energy heavy-ion collisions, spin-thermalized approaches significantly overestimate both global and local nucleon spin polarizations compared to results derived from spin-orbit mean-field potentials in transport simulations.
This paper employs cluster effective field theory, fitted to recent experimental data from the LUNA and JUNA collaborations, to calculate the factor of the C(,)O reaction at low energies and extrapolate it to the Gamow peak relevant for low-mass AGB stars, identifying the near-breakup threshold state of O as the primary source of uncertainty.
Using the three-fluid dynamics model, this study calculates global polarization in Au+Au collisions at high baryon densities (3–9 GeV), successfully reproducing STAR data at 3 GeV and predicting a broad maximum in polarization around 3–3.9 GeV while analyzing the specific contributions of thermal vorticity, meson fields, thermal shear, and the spin-Hall effect.
This study investigates transverse momentum spectra of light charged hadrons in RHIC d+Au and p+p collisions at GeV, revealing that effective temperatures derived from standard and Tsallis distributions exhibit systematic decreases across distribution types and collision centralities, while maintaining perfect linear relationships between them.
This study reports the direct measurement of lifetimes for the and states in using the fast timing technique with a CeBr detector array, and compares the resulting reduced transition probabilities with large-basis shell model and interacting boson model calculations.
The TRIUMF collaboration reports initial successful production of ultracold neutrons from a new spallation-driven superfluid helium-4 source, with results aligning with simulations and indicating the facility is on track to achieve its ultimate goals for a high-precision measurement of the neutron electric dipole moment once the cold moderator system is completed.
Using a three-fluid dynamics model with a crossover equation of state, this paper predicts a non-monotonic evolution of proton directed flow in Au+Au collisions between 4.5 and 7.7 GeV, characterized by a sign change and minimum at 7.2 GeV that signals the onset of the transition to quark-gluon plasma.
Using a large sample of events collected by the BESIII detector, researchers observed the reaction with a statistical significance of 6.4 and measured its cross section, while finding no evidence for an -dibaryon in the final state.
This paper presents general methods for extracting transverse single-spin asymmetries using both binned and unbinned maximum likelihood approaches, specifically designed to address experimental challenges such as time-varying polarization, unequal spin-state luminosities, and the need for background subtraction and kinematic unfolding.