NAGIOS: RODERIC FUNCIONANDO

Quantum loops in the resonance chiral theory: the vector form factor

Repositori DSpace/Manakin

Valencià Castellano

Inici
Investigació
e-prints
22 - Física
Visualitza element

IMPORTANT: Aquest repositori està en una versió antiga des del 3/12/2023. La nova instal.lació está en https://roderic.uv.es/

Quantum loops in the resonance chiral theory: the vector form factor

Mostra el registre complet de l'element

Visualització (243.7Kb)

Rosell Escribà, Ignasi; Sanz Cillero, Juan José; Pich Zardoya, Antonio

Aquest document és un/a article, creat/da en: 2004

We present a calculation of the Vector Form Factor at the next-to-leading order in the 1/N-C expansion, within the framework of Resonance Chiral Theory. The calculation is performed in the chiral limit, and with two dynamical quark flavours. The ultraviolet behaviour of quantum loops involving virtual resonance propagators is analyzed, together with the kind of counterterms needed in the renormalization procedure. Using the lowest-order equations of motion, we show that only a few combinations of local couplings appear in the final result. The low-energy limit of our calculation reproduces the standard Chiral Perturbation Theory formula, allowing us to determine the resonance contribution to the chiral low-energy couplings, at the next-to-leading order in 1/N-C, keeping a full control of their renormalization scale dependence.

Veure al catàleg Trobes