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.

Statistical uncertainty quantification for multireference covariant density functional theory

This paper presents a Bayesian framework for quantifying statistical uncertainties in covariant density functional theory by sampling parameter variations and propagating posterior distributions via a subspace-projected approach, successfully reproducing observables for deformed nuclei while highlighting current limitations in describing near-spherical systems.

X. Zhang, C. C. Wang, C. R. Ding, J. M. Yao2026-04-10⚛️ nucl-ex

Probing the Dependence of Partonic Energy Loss on the Initial Energy Density of the Quark Gluon Plasma

This paper utilizes a phenomenological spectrum shift model to demonstrate a striking correlation between average partonic transverse momentum loss and the initial energy density of the Quark-Gluon Plasma across a wide range of collision energies, while also successfully predicting high-pTp_{\mathrm{T}} hadron elliptic flow by coupling the model to geometric event shape estimates.

Ian Gill, Ryan J. Hamilton, Helen Caines2026-04-10⚛️ nucl-ex

Precise 136^{136}Xe Double Beta Decay Measurement in PandaX-4T with Implications on the Nuclear Matrix Elements and Majorons

Using 39.1 kg·yr of exposure from the PandaX-4T experiment, this study presents the most precise measurement to date of the 136^{136}Xe two-neutrino double beta decay half-life, provides a consistent measurement of the nuclear matrix element ratio ξ312ν\xi_{31}^{2\nu}, and establishes the world's most stringent limit on Majoron-emitting modes with spectral index n=7n=7.

PandaX Collaboration, Zhe Yuan, Zihao Bo, Wei Chen, Xun Chen, Yunhua Chen, Chen Cheng, Xiangyi Cui, Manna Deng, Yingjie Fan, Deqing Fang, Xuanye Fu, Zhixing Gao, Yujie Ge, Lisheng Geng, Karl Giboni, X (…)2026-04-10⚛️ nucl-ex

Ground State Decay of the Three-Proton Emitter 17^{17}Na Reveals Isospin Symmetry Breaking

This study reveals that the ground state of the exotic three-proton emitter 17^{17}Na has a significantly lower decay energy and narrower width than previously estimated, with its sequential decay pattern and systematic mirror energy differences providing strong evidence for general isospin symmetry breaking in light to medium-mass nuclei beyond the proton drip line.

X. -D. Xu, I. Mukha, Z. C. Xu, S. M. Wang, K. Y. Zhang, L. Acosta, E. Casarejos, D. Cortina-Gil, J. M. Espino, A. Fomichev, H. Geissel, J. Gómez-Camacho, L. V. Grigorenko, O. Kiselev, A. A. Korsheni (…)2026-04-10⚛️ nucl-ex

Characterizing the initial state and dynamical evolution in XeXe and PbPb collisions using multiparticle cumulants

Using the CMS detector, this study presents the first measurements of correlations among mixed-order moments of two and three flow harmonics in XeXe and PbPb collisions, leveraging the distinct nuclear shapes of doubly-magic 208^{208}Pb and triaxially deformed 129^{129}Xe to probe initial-state geometry fluctuations and constrain the nonlinear hydrodynamic response of the quark-gluon plasma.

CMS Collaboration2026-04-09⚛️ nucl-ex