Quantum Corrections in the Resonance Chiral Theory
| dc.creator | Rosell, I. | |
| dc.date | 2007-01-30 | |
| dc.date.accessioned | 2026-07-07T07:43:50Z | |
| dc.date.available | 2026-07-07T07:43:50Z | |
| dc.description | This PhD thesis is a first step towards the control of the quantum corrections in the Resonance Chiral Theory, the suggested framework to handle QCD in the resonance region. After a theoretical introduction, Chapter 3 is devoted to calculate the vector form factor of the pion at the next-to-leading order in the 1/N(C) expansion. The ultraviolet behaviour of the calculation is analyzed, together with the needed counterterms in the renormalization procedure. The long-distance limit allows to determine the resonance contribution to the low-energy constants of Chiral Perturbation Theory at the NLO in 1/N(C). In Chapter 4 a study of the two-body hadronic form factors from large-N(C) QCD is shown. We present a dispersive method which allows to investigate the chiral LECs and we perform a NLO calculation of the scalar and pseudoscalar two-point functions. Imposing the correct QCD short-distance constraints, one determines their difference Pi(t)=Pi_S(t)-Pi_P(t) in terms of the pion decay constant and resonance masses. Its low-momentum expansion fixes then the ChPT coupling L(8). In Chapter 5 we evaluate the beta-function at one-loop of the resonance lagrangian with one multiplet of scalar and pseudoscalar resonances, up to bilinear couplings in the resonance fields, by using the background field method. | |
| dc.description | PhD Thesis. University Valencia, January 2007. PhD Advisors: A. Pich and J. Portoles | |
| dc.identifier | https://arxiv.org/abs/hep-ph/0701248 | |
| dc.identifier | http://arxiv.org/abs/hep-ph/0701248 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/122984 | |
| dc.subject | High Energy Physics - Phenomenology | |
| dc.title | Quantum Corrections in the Resonance Chiral Theory | |
| dc.type | text |