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 (Journal Indexed in SCI) identifier identifier

  • Publication Type: Article / Article
  • Volume: 96 Issue: 2
  • Publication Date: 2017
  • Doi Number: 10.1103/physrevc.96.025203
  • Title of Journal : PHYSICAL REVIEW C

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.