Mass and width of the Roper resonance using complex-mass renormalization
arXiv:0903.0736 · doi:10.1016/j.physletb.2010.05.022
Abstract
The pole mass and the width of the Roper resonance are calculated as functions of the pion mass in the framework of low-energy effective field theory of the strong interactions. We implement a systematic power-counting procedure by applying the complex-mass renormalization scheme.
8 pages, 2 fugures, REVTeX 4