Reaction cross section of proton scattering consistent with PREX-II

• Published in: Results in physics Vol. 29; p. 104749
• Main Authors: Wakasa, Tomotsugu, Tagami, Shingo, Matsui, Jun, Yahiro, Masanobu, Takechi, Maya
• Format: Journal Article
• Language: English
• Published: Elsevier B.V 01.10.2021; Elsevier
• ISSN: 2211-3797; 2211-3797
• DOI: 10.1016/j.rinp.2021.104749

The neutron skin thickness RskinPV of PREX-II is presented in Adhikari et al. (2021). The reaction cross section σR is useful to determine the matter radius Rm and Rskin. For proton scattering, the reaction cross section σR are available for Elab˜>400MeV. We determine Rnexp=5.727±0.071 fm and Rmexp=5.617±0.044 fm from Rpexp = 5.444 fm and RskinPV. The RpGHFB calculated with Gongny-D1S HFB (GHFB) with the angular momentum projection (AMP) agrees with Rpexp. The neutron density calculated with GHFB+AMP is scaled so as to Rnscaling=5.727 fm. The Love-Franey t-matrix model with the scaled densities reproduces the data on σR. Our aim is to find the σR of proton scattering consistent with RskinPV. The σR of proton scattering consistent with RskinPV are σRexp at Elab=534.1,549,806MeV. •Experimental data on neutron skin of Pb is quite new. This PREX-II value is 0.283 ± 0.071 fm.•The PREX-II value is too large and there is no structure theory.•This work finds that the reaction cross sections of proton scattering consistent with the PREX-II value are data at Elab = 534.1, 549, 806 MeV.•Our model is the folding model based on Love–Franey (LF) t-matrix.