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 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.
Using CMS data from lead-lead and proton-proton collisions at = 5.02 TeV, this study investigates the longitudinal invariance and shape evolution of jet-induced peaks in two-particle angular correlations, revealing that the peaks broaden significantly in pseudorapidity and exhibit increased longitudinal asymmetry as collision centrality and particle pseudorapidity increase.
This paper demonstrates a novel method for resolving event-by-event discrete charge changes in optically levitated silica microspheres caused by individual radioactive decays of implanted Pb and its daughters, by correlating millisecond-scale charge measurements with coincident scintillation detector signals to distinguish the charge ejection characteristics of and decays.
This paper introduces a momentum rescaling framework that explains the unexplained rise-and-fall pattern of radial flow fluctuations in the quark-gluon plasma by factorizing them into a kinematic component driven by spectral shape transitions and a dynamical component that reveals significant medium-dependent deviations in LHC and RHIC collisions.
This paper presents new measurements of , K, and p production in high-multiplicity proton-proton collisions at 13 TeV that reveal mass-dependent spectral hardening and enhanced baryon-to-meson ratios similar to heavy-ion collisions, suggesting that particle production scales with charged-particle multiplicity rather than system size or collision energy, while highlighting that current Monte Carlo models fail to consistently describe all observed features.
Using the full LHC Run 2 dataset, this ALICE study reports the first measurements of event-by-event correlations between elliptic flow and mean transverse momentum in pp, p-Pb, and Pb-Pb collisions, revealing non-monotonic trends and system-consistent values at low multiplicity that challenge current theoretical models and provide new constraints on the origin of collectivity in small collision systems.
This paper proposes that a minimal dark scalar with a mass of approximately 9.40 GeV, which shares high- fragmentation scaling with NRQCD color-octet production, can simultaneously explain the anomalous high- plateau in nuclear modification factors, the vanishing elliptic flow, and the quarkonium polarization puzzle in heavy-ion collisions while evading historical low- constraints.
Using an effective Lagrangian approach calibrated to existing data, this study successfully reproduces the production cross sections of high-spin and mesons in reactions and predicts measurable, forward-peaked production rates for their partners, suggesting their feasibility for observation in future meson-beam experiments.
This paper critically examines a recent analysis claiming evidence for a QCD critical end point via finite-size scaling of net-proton cumulants, highlighting methodological issues regarding acceptance windows, multiplicity scaling, and thermodynamic fields that must be addressed for a consistent interpretation.