Work

In-medium nucleon-nucleon cross sections from relativistic ab initio calculations

Year: 2025

Type: article

Abstract: The in-medium nucleon-nucleon scattering cross section is a pivotal quantity for studying the medium effects of strong interaction, and its precise knowledge is critical for understanding the equation of state for dense matter, intermediate-energy heavy-ion collision dynamics, and related phenomena. In this work, we perform a microscopic investigation of in-medium nucleon-nucleon scattering cross sections, by utilizing the relativistic Brueckner-Hartree-Fock (RBHF) theory with the Bonn potential. The fully incorporation of both positive- and negative-energy states in the RBHF solutions allows us to determine the single-particle potentials, the effective $G$ matrix, and the scattering cross section uniquely. The momentum, density, and isospin dependence of the cross section for $pp$, $nn$, and $np$ scattering are studied in detail. Our results provide a solid foundation for future parametrization studies of multiparameter dependency of total scattering cross sections.

Source: Physical Review C

DOI: 10.1103/2cn8-s9ss

Authors: Tianyu Wang, Hui Tong, Chencan Wang, Xiaoying Qu, Sibo Wang

Institutions: Guizhou Minzu University, University of Bonn, China Academy of Engineering Physics, Graduate School of China Academy of Engineering Physics, Chongqing University

Language: English

Topic: Nuclear physics research studies

Subfield: Nuclear and High Energy Physics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: green