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.

Λ\Lambda(1520) as a probe of resonance-driven deuteron formation at the LHC

This paper proposes a novel invariant-mass observable using the Λ(1520)pK\Lambda(1520) \to {\rm pK} resonance to experimentally distinguish between nucleon coalescence and statistical thermal models for deuteron formation at the LHC, demonstrating that a specific resonance peak in the proxy mass spectrum emerges exclusively in the coalescence scenario.

Sushanta Tripathy, Peter Christiansen2026-06-10⚛️ nucl-ex

Hindered ΔK=1\Delta K=1 Dipole Strength in octupole bands in N=90N=90 154^{154}Gd from Lifetime Measurements with γγ\gamma-\gamma fast timing technique

Using the γ\gamma-γ\gamma fast-timing technique with the VENTURE array at VECC, Kolkata, researchers measured the lifetimes of low-lying negative-parity states in 154^{154}Gd to determine that their B(E1)B(E1) transition strengths are strongly hindered, providing evidence for weak ΔK=1\Delta K=1 dipole strength in octupole bands.

A. Pal, S. Basak, D. Kumar, T. Bhattacharjee, B. Maheshwari, K. Nomura, P. Van Isacker, D. Banerjee, S. S. Alam, A. K. Jain2026-06-10⚛️ nucl-ex

Gravitational form factors of the nucleon in the Skyrme model based on scale-invariant chiral perturbation theory

This paper investigates the role of the QCD scale anomaly in the nucleon's gravitational form factors using a scale-invariant Skyrme model, demonstrating that the inclusion of a scalar meson to represent gluonic contributions is crucial for satisfying nucleon stability conditions and accurately reproducing lattice QCD results for the D(t)D(t) form factor.

Mitsuru Tanaka, Daisuke Fujii, Mamiya Kawaguchi2026-06-09⚛️ nucl-th

First determination of vector and tensor couplings from polarized πΔ\pi\Delta photoproduction

This paper utilizes a Regge framework applied to high-energy polarized πΔ\pi\Delta photoproduction data from GlueX to achieve the first complete determination of the vector and tensor couplings between the NΔN\Delta system and the ρ\rho, b1b_1, and a2a_2 mesons.

Vanamali Shastry, Łukasz Bibrzycki, Vincent Mathieu, Glòria Montaña, Alessandro Pilloni, César Fernández-Ramírez, Robert J. Perry, Arkaitz Rodas, Adam P. Szczepaniak, Daniel Winney2026-06-09⚛️ hep-ph

T-matrix analysis of pion-proton femtoscopy

This paper investigates the observed shift of the Δ(1232)\Delta(1232) resonance peak in pion-proton femtoscopic correlations by applying a T-matrix approach within the Koonin-Pratt framework to reveal how the finite emission source induces off-shell dynamics, though the model's inability to fully reproduce experimental correlation strength and the absence of a predicted high-momentum dip suggest the need for more complex source descriptions beyond a simple spherical Gaussian approximation.

Liang Zhang, Tianhao Shao, Song Zhang, Kai-Jia Sun, Yu-Gang Ma2026-06-09⚛️ nucl-th