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 continuum Schwinger function methods, this paper demonstrates that the pion and kaon possess significant intrinsic orbital angular momentum in their rest frames and light-front projections, revealing them as complex bound states with observer-dependent OAM compositions that must be accounted for in hadronic observables.
This paper presents the first lattice-QCD estimate of the QCD crossover line down to MeV by introducing a novel method that combines Lee-Yang edge singularities from imaginary chemical potential simulations with universal chiral scaling to determine the baryon chemical potential dependence of critical temperatures without relying on small- expansions.
Using high-precision decay-pion spectroscopy at the MAMI facility, researchers determined the -binding energy of H to be MeV, a value that indicates significantly deeper binding than earlier measurements and implies a stronger -deuteron interaction.
This study demonstrates that unexpectedly high alpha-particle induced reaction cross sections for the Pt(,x)Pt reaction below the Coulomb barrier are primarily caused by secondary neutrons rather than the direct alpha interaction, highlighting the critical need to account for such neutron-induced backgrounds in low-energy charged-particle activation measurements.
This paper investigates the thermodynamic geometry of the hadron resonance gas model with and without excluded volume effects across real and imaginary baryon chemical potentials, utilizing the scalar curvature to map phase structures, determine a baryon gas limitation temperature that aligns with lattice QCD predictions, and derive a simple sufficient condition for quark deconfinement.
This paper surveys empirical evidence and theoretical frameworks, ranging from multifragmentation data and mean-field calculations to chiral effective field theory, regarding the first-order liquid-gas phase transition in nuclear matter and the determination of its critical point.
This paper reviews and extends theoretical frameworks for alpha clustering in light nuclei, introducing a fully quantum formulation for dual rotational modes in cluster states, proposing an extended no-core shell model that integrates cluster-nucleon configurations, and analyzing the competition between cluster and shell-model components in nuclei like C driven by spin-orbit interactions.
This paper reviews recent advancements in direct neutron-capture measurements for stellar nucleosynthesis, highlighting progress in constraining s- and i-process models through time-of-flight and activation techniques while addressing current limitations and outlining future strategies involving high-flux facilities and inverse-kinematics experiments.
This paper reports the first direct mass spectrometry investigation of the ground and isomeric states of Zn using ISOLTRAP, which corrects the ground-state mass excess, confirms the isomer's excitation energy, and provides strong evidence for a spin-1/2 ground state that aligns with large-scale shell-model predictions.
This paper proposes enhanced PICOSEC detector configurations that utilize thick reflective photocathodes on readout electrodes of various avalanche multipliers to improve robustness and performance, including operation at mbar gas pressures.