Eta-eta' Photoproduction and the axial isoscalar neutral current coupling
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Eta-eta' Photoproduction and the axial isoscalar neutral current coupling

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Eta-eta' Photoproduction and the axial isoscalar neutral current coupling

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Bernabeu Alberola, José Perfil; González Sprinberg, Gabriel A.; Vidal Perona, Jorge Perfil
This document is a artículoDate1995

Este documento está disponible también en : http://dx.doi.org/10.1007/BF02907424

Este documento está disponible también en : http://hdl.handle.net/10550/32452
We show that coherentη andη′ photoproduction by means of the Primakoff Effect on the proton depends on the strange component of the neutral axial current coupling. We construct polarization asymmetries that are sensitive to this coupling through theγ−Z interference. Theη′ is not a Goldstone boson of a spontaneously broken chiral symmetry, but a phenomenological analysis of theη andη′ production through chiral perturbation theory allows to calculate the observables of interest. The polarized proton or polarized photon asymmetries are predicted to be close to 10−4 for −q 2∼0.1−0.5 GeV2.

    Bernabeu Alberola, José; Gonzalez Sprinberg, G.A.; Vidal Perona, Jorge (1996) Eta-eta' Photoproduction and the axial isoscalar neutral current coupling Zeitschrift für Physik C-Particles and Fields 69 1 431 435
http://dx.doi.org/10.1007/BF02907424

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