Nuclear theory sits at the fascinating intersection of particle physics and the forces that hold our universe together. This field explores how protons and neutrons bind inside atomic nuclei, seeking to understand the fundamental interactions that govern matter at its most dense and energetic levels. While the mathematics involved can be incredibly complex, the core questions are deeply human: how does the universe function at its smallest scales, and what happens when we push matter to its limits?

At Gist.Science, we make these cutting-edge discoveries accessible by processing every new preprint published in this category on arXiv. Our team transforms dense academic manuscripts into clear, plain-language summaries alongside detailed technical overviews, ensuring that both experts and curious readers can grasp the latest breakthroughs without getting lost in the jargon. Below are the latest papers in nuclear theory, distilled and ready for you to explore.

Combined analysis of the data on cross sections and spin density matrix elements for KΣK^*\Sigma photoproduction reactions

This paper extends a previous analysis of KΣK^*\Sigma photoproduction by incorporating LEPS spin density matrix element data to constrain the theoretical model, revealing that while the Δ(1905)5/2+\Delta(1905)5/2^+ resonance is essential, the role of tt-channel κ\kappa exchange is ambiguous and contradicts earlier claims of its dominance.

Aai-Chao Wang, Neng-Chang Wei, Fei Huang2026-03-31⚛️ nucl-th

Study of radiative proton capture by the 7Be nucleus with the use of ab initio approaches

This paper presents a high-accuracy theoretical study of the 7Be(p,γ)8B reaction in the astrophysical energy range using a novel ab initio framework that combines the No-Core Shell Model and Cluster Channels Orthogonal Functions Method with R-matrix theory to calculate the astrophysical S-factor, evaluate result reliability, and identify dominant reaction mechanisms.

D. Rodkin, Yu. Tchuvilsky2026-03-31⚛️ nucl-th

Heavy-Flavor Fragmentation from HF-NRevo: Status, Prospects, and Intrinsic Charm

This paper reports on the development and application of the HF-NRevo framework, which provides a consistent perturbative description of heavy-flavor fragmentation for SS-wave quarkonia and fully heavy tetraquarks, enabling new investigations into medium effects in heavy-ion collisions and the intrinsic charm content of the proton at future collider facilities.

Francesco Giovanni Celiberto, Francesca Lonigro2026-03-31⚛️ nucl-ex