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

Mass and width of the Δ(1232) resonance using complex-mass renormalization We discuss the pole mass and the width of the Δ(1232) resonance to third order in chiral effective field theory. In our calculation we 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. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Physical Review C American Physical Society (APS)

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

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

Abstract

We discuss the pole mass and the width of the Δ(1232) resonance to third order in chiral effective field theory. In our calculation we 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.
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Publisher
The American Physical Society
Copyright
Copyright © ©2017 American Physical Society
ISSN
0556-2813
eISSN
1089-490X
D.O.I.
10.1103/PhysRevC.96.025203
Publisher site
See Article on Publisher Site

Abstract

We discuss the pole mass and the width of the Δ(1232) resonance to third order in chiral effective field theory. In our calculation we 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.

Journal

Physical Review CAmerican Physical Society (APS)

Published: Aug 7, 2017

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