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.

⚛️ high-energy experiments

Spin-dependent azimuthal asymmetry of coherent J/ψ\psi photoproduction in hadronic PbPb collisions at sNN\sqrt{s_\mathrm{NN}} = 5.36 TeV

Using CMS data from 5.36 TeV PbPb collisions, this study reports the first observation of a significant negative spin-dependent azimuthal asymmetry in coherently photoproduced J/ψ\psi mesons, confirming a theoretical model where the meson inherits the incident photon's linear polarization and suggesting a novel method for reaction plane determination.

CMS Collaboration2026-09-07
⚛️ high-energy experiments

Measurement of Differential Cross Sections and Integrated Luminosity using Proton-Proton Elastic Scattering with HADES at T = 4.53 GeV and T = 1.60 GeV

This paper presents the first measurements of differential cross sections and integrated luminosity for elastic proton-proton scattering at kinetic energies of 4.53 GeV and 1.60 GeV using the upgraded HADES detector, yielding new slope parameters and providing essential data for theoretical modeling and future luminosity calibrations.

HADES Collaboration, R. Abou Yassine, J. Adamczewski-Musch, G. A. Appagere, M. Becker, A. Blanco, C. Blume, M. Bohman, Y (…)2026-09-04
⚛️ nuclear experiments

Leading-Neutron Electroproduction at HERA and the EIC: Sullivan Process, Target Fragmentation, and Pion PDFs

This paper demonstrates that combining Sullivan process and target-fragmentation contributions in Pythia successfully describes HERA leading-neutron data across the full kinematic range, thereby enabling the extraction of pion parton distribution functions at smaller momentum fractions and providing optimized projections for future measurements at the Electron-Ion Collider.

Wen-Chen Chang, Chia-Yu Hsieh, Satyajit Puhan2026-09-04
⚛️ nuclear theory

CGC-py: A Monte Carlo Event Generator for Gluon Saturation Physics

This paper introduces CGC-py, a Monte Carlo event generator that integrates Color Glass Condensate physics with parton branching and hadronization to consistently model deep-inelastic scattering, validating its predictions against experimental data and demonstrating its utility for probing gluon saturation effects in future electron-ion collider measurements.

Haowu Duan, Cong Yi, Si-Wei Dai, Shu-Yi Wei, Wenbin Zhao, Liang Zheng2026-09-04
⚛️ nuclear experiments

First Measurement of Near-Threshold J/{\psi} Photoproduction on the Neutron

Using the CLAS12 detector at Jefferson Lab, researchers report the first measurement of near-threshold J/ψJ/\psi photoproduction cross sections on the neutron and bound proton, providing new constraints on production mechanisms and evidence for modifications to the gluonic structure of nucleons within the nuclear medium.

R. Tyson, D. G. Ireland, B. McKinnon, P. Chatagnon, V. Kubarovsky, S. Stepanyan, A. G. Acar, P. Achenbach, J. S. Alvarad (…)2026-09-04
⚛️ nuclear experiments

Measurement of the forward angle 12^{12}C+12^{12}C fragmentation differential cross sections at 62 MeV/nucleon

This paper presents high-precision measurements of forward-angle fragmentation differential cross sections for the 12^{12}C+12^{12}C reaction at 62 MeV/nucleon using the FAZIA array, revealing that heavier fragments follow the Van Bibber model due to dissipative processes while alpha particles exhibit an anomalously narrow distribution attributed to the intrinsic cluster structure of 12^{12}C.

G. Guo, G. Casini, B. H. Sun, S. Barlini, A. Camaiani, C. Frosin, I. Lombardo, O. Lopez, S. Piantelli, I. Tanihata, S. T (…)2026-09-04