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.

Observation of impact parameter dependent modifications of nuclear parton distributions in photonuclear Pb+Pb collisions at sNN=5.02\sqrt{s_\mathrm{NN}} = 5.02 TeV with the ATLAS detector

Using 2018 ATLAS data from ultra-peripheral Pb+Pb collisions at 5.02 TeV, this study provides the first experimental observation that nuclear parton distribution modifications vary with impact parameter, evidenced by a significant difference in γ+A\gamma+A jet production cross-sections between collisions with and without forward neutron emission.

ATLAS Collaboration2026-04-23⚛️ nucl-ex

Proton induced reactions on 118Sn target at energies up to 18 MeV

This study investigates proton-induced reactions on an enriched 118Sn target up to 18 MeV using the stacked-foil activation technique, reporting first-time cross-section measurements for specific channels and revealing discrepancies between experimental data and theoretical models regarding composite-particle emission.

G. H. Hovhannisyan, N. S. Gharibyan, T. M. Bakhshiyan, A. R. Balabekyan, S. V. Gaginyan, G. V. Martirosyan, A. Manukyan, R. K. Dallakyan, A. Aprahamian2026-04-22⚛️ nucl-ex

The size of the quark-gluon plasma in ultracentral collisions: impact of initial density fluctuations on the average transverse momentum

This paper analytically demonstrates that the variation of the quark-gluon plasma volume in ultracentral collisions depends on initial density fluctuations and is negligible when total entropy scales with the mass number, thereby establishing that measurements of average transverse momentum can probe detailed nuclear structure and pre-equilibrium dynamics.

Fabian Zhou, Giuliano Giacalone, Jean-Yves Ollitrault2026-04-21⚛️ nucl-ex

Isospin Decomposition of Vector and Axial Two-Body Currents via Polarized Electron--Deuteron and Electron--3^3He Scattering at the Electron-Ion Collider

This paper proposes a measurement program at the Electron-Ion Collider using polarized electron scattering on deuteron and 3^3He to directly constrain the axial two-body current and resolve current discrepancies in meson-exchange current models, which are critical for reducing uncertainties in long-baseline neutrino oscillation experiments.

Guang Yang, Praveen Kumar2026-04-21⚛️ nucl-ex