One loop predictions for the pion VFF in Resonance Chiral Theory

Details One loop predictions for the pion VFF in Resonance Chiral Theory One loop predictions for the pion VFF in Resonance Chiral Theory

2010-09-29

arxiv.org/abs/1009.6012v1

AIP Conf.Proc.1317:116-121,2011

Physics

High Energy Physics

High Energy Physics - Phenomenology

6 pages. Talk given at QCD@Work 2010 -International Workshop on QCD: Theory and Experiment-, 20-23 June 2010, Martina Franca,

Scientific paper

10.1063/1.3536542

A calculation for the one-loop pion vector form-factor in Resonance Chiral
Theory is provided in this talk. The amplitude is computed up to
next-to-leading order in 1/Nc and, by means of high-energy constraints, we are
able to produce a prediction for the corresponding O(p4) Chiral Perturbation
Theory low energy constant L9(mu)=(7.6+- 0.6) 10^{-3} at the scale mu=770 MeV.

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