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Resonance saturations of the chiral couplings at NLO


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Title: Resonance saturations of the chiral couplings at NLO
Authors : Rosell Escribá, Ignasi
Keywords: Cromodinámica cuántica.Lagrange, Funciones de.Lagrangian functions.Campos, Teoría cuántica de.Partículas (Física nuclear)Quantum chromodynamics.Quantum field theory.Particles (Nuclear physics)
Publisher: Sissa Medialab
Citation: Rosell, I. (2009). Resonance saturations of the chiral couplings at NLO. Proceedings of Science, vol. 069 (EFT09), art. 023 (5 oct.). DOI: https://doi.org/10.22323/1.069.0023
Abstract: A proper estimation of the chiral low-energy constants of Chiral Perturbation Theory is a very important task. To this end resonance chiral Lagrangians have been used fruitfully. We have studied the determination of chiral couplings at next-to-leading (NLO) order in the 1=NC expansion, keeping full control of the renormalization scale dependence. We find that, by imposing shortdistance constraints coming from QCD, resonance saturation at NLO in 1=NC is satisfied. In other words, the chiral couplings can be written in terms of the resonance masses and couplings and do not depend explicitly on the coefficients of the chiral operators in the Goldstone boson sector of Resonance Chiral Theory.
Description: Esta comunicación se encuentra disponible en la página web de PoS en la siguiente URL: https://pos.sissa.it/069/023/pdf
Esta comunicación forma parte de las comunicaciones leídas en la "International Workshop on Effective Field Theories: from the pion to the upsilon" dentro de la sesión "Tuesday Afternoon" celebrada en Valencia (España) entre el 2-6 de febrero de 2009.
URI: http://hdl.handle.net/10637/11772
Rights : http://creativecommons.org/licenses/by-nc-sa/4.0/deed.es
ISSN: 1824-8039 (Electrónico)
Issue Date: 5-Oct-2009
Center : Universidad Cardenal Herrera-CEU
Appears in Collections:Dpto. Matemáticas, Física y Ciencias Tecnológicas





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