Determining chiral couplings at NLO
| dc.creator | Rosell, Ignasi | |
| dc.date | 2007-09-20 | |
| dc.date.accessioned | 2026-07-07T10:57:29Z | |
| dc.date.available | 2026-07-07T10:57:29Z | |
| dc.description | We present a general method that allows to estimate the low-energy constants of Chiral Perturbation Theory up to next-to-leading corrections in the 1/N(C) expansion, that is, keeping full control of the renormalization scale dependence. As a first step we have determined L(8) and C(38), the couplings related to the difference of the two-point correlation functions of two scalar and pseudoscalar currents, L(8)(mu_0) = (0.6 \pm 0.4) 10^{-3} and C(38)(mu_0) = (2 \pm 6) 10^{-6}$, with mu_0 = 0.77 GeV. As in many effective approaches, one of the main ingredients of this method is the matching procedure: some comments related to this topic are presented here. | |
| dc.description | Talk given at the International Workshop on Quantum Chromodynamics QCD@work 2007, 16th-20th June (2007), Martina Franca (Italy). 6 pp | |
| dc.identifier | https://arxiv.org/abs/0709.3236 | |
| dc.identifier | http://arxiv.org/abs/0709.3236 | |
| dc.identifier | AIPConf.Proc.964:28-33,2007 | |
| dc.identifier | doi:10.1063/1.2823865 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/186770 | |
| dc.subject | High Energy Physics - Phenomenology | |
| dc.title | Determining chiral couplings at NLO | |
| dc.type | text |