⚛️ Category

nucl-ex

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.

Quantifying uncertainty in physics-based predictions of rare-isotope production cross sections via Bayesian-inspired model averaging across nuclear mass tables

This paper introduces a Bayesian-inspired model-averaging framework that combines abrasion-ablation calculations from multiple nuclear mass tables to generate statistically weighted predictions and uncertainty estimates for rare-isotope production cross sections, thereby improving accuracy for both interpolation and limited extrapolation in proton-rich fragmentation regimes.

O. B. Tarasov2026-03-12⚛️ nucl-ex

Experiments at the CERN SPS: first signals of deconfinement

This paper reviews the history of heavy-ion experiments at the CERN SPS, detailing how studies with light and lead ions from the mid-1980s to 2000 culminated in the announcement of evidence for quark-gluon plasma formation and a subsequent energy scan to determine the creation threshold.

Federico Antinori, Marek Gazdzicki, Tapan K. Nayak, Guy Paic, Karel Šafařík, Enrico Scomparin, Itzhak Tserruya, Emanuele Quercigh, Gianluca Usai2026-03-12⚛️ nucl-ex

Direct observation of three-neutron emission from 7^7He∗^* and the search for the trineutron

This paper reports the first direct observation of three-neutron emission from 7^7He∗^*, identifying a resonance-like structure consistent with sequential decay via 6^6He and finding no evidence for a trineutron resonance or significant three-neutron correlations beyond standard two-body interactions.

S. W. Huang, C. Lenain, Z. H. Yang, F. M. Marqués, J. Gibelin, J. G. Li, A. Matta, N. A. Orr, N. L. Achouri, D. S. Ahn, A. Anne, T. Aumann, H. Baba, D. Beaumel, M. Böhmer, K. Boretzky, M. Caamañ (…)2026-03-12⚛️ nucl-ex

Fragmentation of Nuclear Remnants in Electron-Nucleus Collisions at High Energy as a Nonextensive Process

This paper proposes that the fragmentation of nuclear remnants in high-energy electron-nucleus collisions is a nonextensive process, utilizing partitioning methods and Tsallis statistics to predict multiplicity distributions for excited nuclei like 9^9Be, 12^{12}C, and 16^{16}O while highlighting potential deviations caused by α\alpha-cluster structures.

Ting-Ting Duan, Sahanaa Büriechin, Hai-Ling Lao, Fu-Hu Liu, Khusniddin K. Olimov2026-03-11⚛️ nucl-ex

Measurement of Kaon Directed Flow in Au+Au Collisions in the High Baryon Density Region

This paper presents STAR experiment measurements of directed flow (v1v_1) for kaons in low-energy Au+Au collisions, revealing a strong pTp_\text{T}-dependent slope that transitions from negative to positive and suggesting that spectator shadowing effects are crucial for explaining the observed low-pTp_\text{T} kaon anti-flow in the high baryon density region.

STAR Collaboration2026-03-11⚛️ nucl-ex

Calculation of Particle Pair Correlation Functions with Classical Trajectory Approximation

This paper presents a novel Monte Carlo model using a classical trajectory approximation to calculate particle pair correlation functions in heavy-ion collisions, demonstrating that the method successfully fits experimental data and is highly sensitive to the source's spatio-temporal extent while being largely independent of the temperature parameter, thus advancing femtoscopic interferometry in the Fermi energy domain.

Sheng Xiao, Yijie Wang, Zhigang Xiao2026-03-11⚛️ nucl-ex

Weak Charge Form Factor Determination at the Electron-Ion Collider

This paper proposes that the Electron-Ion Collider (EIC) can significantly advance the determination of nuclear weak charge form factors by providing continuous momentum transfer data across a wide range of nuclei, thereby resolving theoretical degeneracies in neutron density distributions that current single-point fixed-target experiments cannot address.

Hooman Davoudiasl, Hongkai Liu, Sonny Mantry, Ethan T. Neil2026-03-11⚛️ hep-ph

Chemically-polarized material for nuclear and particle physics

This paper presents the first in-beam demonstration that chemically hyperpolarized materials produced via the SABRE method serve as viable, radiation-resistant targets and detector media for nuclear and particle physics, offering a cost-effective alternative to traditional cryogenic spin-polarized targets without suffering depolarization under intense radiation.

Benjamin G. Collins, Daniel P. Watts, Mikhail Bashkanov, Stephen Kay, Simon B. Duckett, Andreas Thomas, Dmitry Budker, Danila Barskiy, Raphael Kircher2026-03-11🔬 physics

Sensitivity of Jet Observables to Molière Scattering Off Quasiparticles in Quark-Gluon Plasma

This paper presents a full calculation of Molière scattering between jet partons and QGP quasiparticles implemented within the Hybrid Model, demonstrating that photon-tagged jets serve as a sensitive probe for detecting distinctive experimental signatures of these hard scatterings through their impact on jet substructure observables like the Soft Drop angle and jet girth.

Zachary Hulcher, Arjun Srinivasan Kudinoor, Daniel Pablos, Krishna Rajagopal2026-03-11⚛️ hep-ph