Journal of East China Normal University(Natural Science) ›› 2022, Vol. 2022 ›› Issue (4): 103-113.doi: 10.3969/j.issn.1000-5641.2022.04.010

• Physics and Electronics • Previous Articles    

SU(3) covariant chiral effective theory and corrections to the octet baryon masses

Zhou LIU, Jifeng YANG*()   

  1. School of Physics and Electronic Science, East China Normal University, Shanghai 200241, China
  • Received:2021-04-20 Online:2022-07-25 Published:2022-07-19
  • Contact: Jifeng YANG E-mail:jfyang66@126.com

Abstract:

In this paper, corrections to the octet baryon masses based on the strange quark contribution are calculated using the SU(3) covariant chiral effective theory. We find that the items violating chiral power counting rules are local and can be subtracted by local counterterms which leads to extended minimal subtraction ${(\text{E}}\overline {{\text{MS}}})$ scheme. In addition to the chiral contribution, relativistic correction items are also retained, which is meaningful for accurately calculating the corrections to baryon masses and analytical extrapolation.

Key words: covariant chiral effective field theory, octet baryons, chiral power counting rules, ${\text{E}}\overline {{\text{MS}}} $scheme

CLC Number: