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Correlators of left charges and weak operators in finite volume chiral perturbation theory

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Correlators of left charges and weak operators in finite volume chiral perturbation theory

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dc.contributor.author Hernández Gamazo, Pilar
dc.contributor.author Laine, Mikko
dc.date.accessioned 2015-04-23T12:01:05Z
dc.date.available 2015-04-23T12:01:05Z
dc.date.issued 2003
dc.identifier.citation Hernández Gamazo, Pilar Laine, Mikko 2003 Correlators of left charges and weak operators in finite volume chiral perturbation theory Journal of High Energy Physics 0301 063
dc.identifier.uri http://hdl.handle.net/10550/43323
dc.description.abstract We compute the two-point correlator between left-handed flavour charges, and the three-point correlator between two left-handed charges and one strangeness violating \Delta I=3/2 weak operator, at next-to-leading order in finite volume SU(3)_L x SU(3)_R chiral perturbation theory, in the so-called epsilon-regime. Matching these results with the corresponding lattice measurements would in principle allow to extract the pion decay constant F, and the effective chiral theory parameter g_27, which determines the \Delta I = 3/2 amplitude of the weak decays K to \pi\pi as well as the kaon mixing parameter B_K in the chiral limit. We repeat the calculations in the replica formulation of quenched chiral perturbation theory, finding only mild modifications. In particular, a properly chosen ratio of the three-point and two-point functions is shown to be identical in the full and quenched theories at this order.
dc.language.iso eng
dc.relation.ispartof Journal of High Energy Physics, 2003, vol. 0301, p. 063
dc.subject Física
dc.title Correlators of left charges and weak operators in finite volume chiral perturbation theory
dc.type journal article es_ES
dc.date.updated 2015-04-23T12:01:05Z
dc.identifier.doi 10.1088/1126-6708/2003/01/063
dc.identifier.idgrec 081399
dc.rights.accessRights open access es_ES

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