548 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 heavy-nucleus effective field theory, this paper derives a universal "double-weak Sirlin function" for two-neutrino double-beta decay that significantly distorts electron energy and angular spectra, necessitating the inclusion of these radiative corrections in high-precision Standard Model tests and nuclear structure extractions.
This paper proposes that jet substructure observables, specifically the Soft Drop splitting angle and energy-energy correlators, in ultra-relativistic oxygen-oxygen collisions can uniquely detect rare, large-angle Molière scatterings between jet partons and quark-gluon plasma quasiparticles, offering a model-independent method to probe the medium's short-distance structure.
This paper establishes a general, relativistically covariant theoretical framework for the semi-inclusive deep-inelastic scattering cross section and spin observables on a polarized spin-1 target, expressed in terms of invariant structure functions and valid across all deep-inelastic final-state regions.
This paper develops a light-front theoretical framework for semi-inclusive deep-inelastic scattering on a polarized deuteron with spectator nucleon tagging, deriving tagged structure functions and spin asymmetries that highlight the role of the deuteron's D-wave component and provide essential tools for future experiments at Jefferson Lab and the Electron-Ion Collider.
This study presents the most accurate test to date of isospin symmetry in the mass system by utilizing precision Coulomb excitation measurements of Zn, Ga, and Ge at RIKEN to confirm a linear relationship between their proton matrix elements, a finding supported by large-scale shell-model calculations.
This study measures the dipole response of the neutron-rich nucleus He, revealing that its low-energy dipole strength is dominated by two-neutron emission rather than four-neutron decay, and provides experimental values for total dipole strength and polarizability that are compared with state-of-the-art theoretical models.
This paper presents an automated, GPU-accelerated framework that computes the zero-temperature nuclear equation of state up to fifth-order many-body perturbation theory by evaluating 840 diagrams with controlled uncertainties, enabling systematic convergence studies in neutron and symmetric nuclear matter using chiral interactions.
The HADES collaboration at GSI reports the first measurement of massive virtual photon emission from N* baryon resonances via the reaction, providing crucial time-like electromagnetic structure data that supports Vector Meson Dominance models and covariant spectator-quark calculations while revealing longitudinal virtual photon contributions and J=3/2, I=1/2 dominance.
Using low-energy electronic recoil data from the first science run of the XENONnT detector and a novel model accounting for charge cancellation effects, researchers established world-leading constraints on spontaneous quantum collapse models that exclude the original parameters of the Continuous Spontaneous Localization theory for the first time.
Using data from the CLAS12 spectrometer at Jefferson Lab, this paper reports the most precise measurement to date of the longitudinal spin transfer to hyperons in electron-proton scattering, providing critical insights into the relative dominance of current and target fragmentation mechanisms in production.