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

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

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dc.contributor.author Rosell Escribà, Ignasi
dc.contributor.author Sanz Cillero, Juan José
dc.contributor.author Pich Zardoya, Antonio
dc.date.accessioned 2015-02-27T09:10:21Z
dc.date.available 2015-02-27T09:10:21Z
dc.date.issued 2004
dc.identifier.citation Rosell Escribà, Ignasi Sanz Cillero, Juan José Pich Zardoya, Antonio 2004 Quantum loops in the resonance chiral theory: the vector form factor Journal of High Energy Physics 2004 8 042-1 042-25
dc.identifier.uri http://hdl.handle.net/10550/42488
dc.description.abstract 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.
dc.language.iso eng
dc.relation.ispartof Journal of High Energy Physics, 2004, vol. 2004, num. 8, p. 042-1-042-25
dc.subject Física
dc.title Quantum loops in the resonance chiral theory: the vector form factor
dc.type journal article es_ES
dc.date.updated 2015-02-27T09:10:21Z
dc.identifier.doi 10.1088/1126-6708/2004/08/042
dc.identifier.idgrec 016629
dc.rights.accessRights open access es_ES

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