One loop predictions for the pion VFF in Resonance Chiral Theory
| Autor: | J. J. Sanz-Cillero, Leonardo Angelini, Pietro Colangelo, Fulvia De Fazio, G. E. Bruno, Donato Creanza, E. Nappi |
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| Rok vydání: | 2010 |
| Předmět: |
Physics
Chiral perturbation theory Meson High Energy Physics - Lattice (hep-lat) Hadron FOS: Physical sciences Resonance (particle physics) High Energy Physics - Phenomenology High Energy Physics - Lattice High Energy Physics - Phenomenology (hep-ph) Pion Quantum electrodynamics Field theory (psychology) Perturbation theory Quantum field theory |
| Zdroj: | AIP Conference Proceedings. |
| ISSN: | 0094-243X |
| DOI: | 10.1063/1.3536542 |
| Popis: | 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. Comment: 6 pages. Talk given at QCD@Work 2010 -International Workshop on QCD: Theory and Experiment-, 20-23 June 2010, Martina Franca, Valle d'Itria (Italy) |
| Databáze: | OpenAIRE |
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