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Example of resonance saturation at one loop
2002
Physical Review D, Particles and fields
We argue that the large-Nc expansion of QCD can be used to treat a Lagrangian of resonances in a perturbative way. As an illustration of this we compute the L_10 coupling of the Chiral Lagrangian by integrating out resonance fields at one loop. Given a Lagrangian and a renormalization scheme, this is how in principle one can answer in a concrete and unambiguous manner questions such as at what scale resonance saturation takes place.
doi:10.1103/physrevd.65.056014
fatcat:22yfedbcofh77l4dhpqatyghw4