2024/07/04 by A. Deltuva, E. Cravo, Deltuva, A. +5
Physics and Astronomy · #FOS: Physical sciences #High-Energy Particle Collisions Research #Nuclear Theory (nucl-th) #Nuclear physics research studies #Quantum Chromodynamics and Particle Interactions
paper · pdf · doi:10.48550/arxiv.2407.03800
openalex publication_date 2024/07/04 · openalex created_date 2024/07/09 · openalex updated_date 2026/07/28
The 12C(p,2p)11B reaction at Ep =98.7 MeV proton beam energy is analyzed using a rigorous three-particle scattering formalism extended to include the internal excitation of the nuclear core or residual nucleus. The excitation proceeds via the core interaction with any of the external nucleons. We assume the 11B ground and low-lying excited states [\frac32- (0.0 MeV), \frac52- (4.45 MeV), \frac72- (6.74 MeV)] and the excited states [\frac12- (2.12 MeV), \frac32- (5.02 MeV)] to be members of K=\frac32- and K=\frac12- rotational bands, respectively. The dynamical core excitation results in a significant cross section for the reaction leading to the \frac52- (4.45 MeV) excited state of 11B that cannot be populated through the single-particle excitation mechanism. The detailed agreement between the theoretical calculations and data depends on the used optical model parametrizations and the kinematical configuration of the detected nucleons.