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Radiative $\eta'$ decays, the topological susceptibility and the Witten-Veneziano mass formula

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The formulae describing the radiative decays eta '( eta ) to gamma gamma in QCD beyond the chiral limit are derived. The modifications of the conventional PCAC formulae due to the gluonic contribution to the axial anomaly in the flavour singlet channel are precisely described. The decay constan...

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Detalles Bibliográficos
Autor principal:	Shore, Graham M
Lenguaje:	eng
Publicado:	2000
Materias:	Particle Physics - Phenomenology
Acceso en línea:	https://dx.doi.org/10.1016/S0550-3213(99)00623-9 http://cds.cern.ch/record/440360

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