Example of resonance saturation at one loop

O. Catà, S. Peris

Research output: Contribution to journalArticleResearchpeer-review


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 L10 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.
Original languageEnglish
Article number056014
Pages (from-to)560141-560146
JournalPhysical Review D - Particles, Fields, Gravitation and Cosmology
Issue number5
Publication statusPublished - 1 Mar 2002


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