Mass and width of the Delta(1232) resonance using complex-mass renormalization

Bauer T., Uenal Y., Kucukarslan A., Scherer S.

PHYSICAL REVIEW C, vol.96, no.2, 2017 (Peer-Reviewed Journal) identifier identifier

  • Publication Type: Article / Article
  • Volume: 96 Issue: 2
  • Publication Date: 2017
  • Doi Number: 10.1103/physrevc.96.025203
  • Journal Name: PHYSICAL REVIEW C
  • Journal Indexes: Science Citation Index Expanded, Scopus

Abstract

We discuss the pole mass and the width of the Delta(1232) resonance to third order in chiral effective field theory. In our calculationwe choose the complex-mass renormalization scheme (CMS) and show that the CMS provides a consistent power-counting scheme. In terms of the pion-mass dependence, we compare the convergence behavior of the CMS with the small-scale expansion.