We consider an effective field theory of unstable particles (resonances)
using the complex-mass renormalization. As an application we calculate the
masses and the widths of the $\rho$ meson and the Roper resonance.Comment: 8 pages, 2 figures; Proceedings of 6th International Workshop on
  Chiral Dynamics, 6-10 July 2009, Bern, Switzerlan

Djukanovic, D.

Gegelia, J.

Keller, A.

Scherer, S.

English

arXiv

We consider an effective field theory of unstable particles (resonances) using the complex-mass renormalization. As an application we calculate the masses and the widths of the ρ meson and the Roper resonance

Complex mass renormalization in EFT

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