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.
This paper reports on the spectroscopy of neutron-rich 51Ca via the 50Ca(d,p) reaction, identifying single-particle states and a candidate 9/2+ excitation to provide new constraints on shell evolution in calcium isotopes through comparison with shell-model and ab initio VS-IMSRG calculations.
By integrating uncertainty-quantified nuclear densities from the Fayans energy density functional with a modernized Glauber reaction framework, this study reanalyzes calcium isotopic interaction cross sections to refute earlier claims of dramatic neutron swelling while establishing a robust methodology for extracting neutron radii across the nuclear chart.
This paper proposes using the Artru-Collins asymmetry in dihadron fragmentation from -wave bottomonium () decays as a direct and unambiguous probe of the color-octet mechanism, offering a novel method to extract the ratio of color-octet to color-singlet matrix elements and resolve discrepancies between lattice calculations and phenomenological determinations using Belle II data.
The ALICE collaboration at the LHC reports the first measurement of the transverse-momentum differential production cross section of B mesons in proton-proton collisions at TeV down to , finding results consistent with perturbative quantum-chromodynamics models.
This paper proposes novel collider methods utilizing azimuthal asymmetries of dihadron production to uniquely probe light-quark dipole moments with linear sensitivity, enabling the disentanglement of up- and down-quark contributions, separation of photon and weak boson effects, and simultaneous determination of real and imaginary parts to significantly strengthen constraints on potential CP-violating new physics.
The ALICE collaboration presents the first measurement of elliptic flow () for prompt baryons in Pb-Pb collisions at TeV, observing a significantly larger for compared to D mesons that provides evidence for charm-hadron formation via quark coalescence.
This study presents direct measurements of the 103Rh(n,gamma) and 103Rh(gamma,n) cross sections at the CSNS Back-n and SSRF SLEGS facilities, respectively, revealing new resonance structures and resolving discrepancies with evaluated libraries to provide critical benchmarks for stellar nucleosynthesis, nuclear medicine, and detector applications.
This paper introduces a novel "charge transfer" friction term within the MUFFIN multi-fluid model for heavy-ion collisions, demonstrating that this approach offers a more consistent description of momentum-separated fluids and improved agreement with experimental data compared to existing methods.
This paper proposes analyzing heavy quark photoproduction associated with a leading neutron in proton-proton and proton-lead collisions at the LHC as a feasible method to probe the pion gluon distribution at small Bjorken- values, a kinematical range not previously covered by experiments.
This paper establishes a non-perturbative Green's function formalism that models sub-barrier proton-nucleus scattering via a surface delta-shell impurity, successfully predicting resonance energies for , , and systems while distinguishing between weak-coupling threshold states and saturated geometric plateau states.