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Mixing angles and decay constants of η, η′, and ηc
, P. Bhattacharyya, S. Sen, J. Chakrabarti
Published in American Institute of Physics Inc.
Volume: 60
Issue: 7
Pages: 1 - 7
We study the problem of pseudoscalar mixing in an SU(4)xSU(4)xUA(1) breaking framework. In this connection, we derive the condition of a vanishing cc̄ component in the η,η′ wave functions. We also obtain new constraints obeyed by the mixed decay constants fη,η′q (q=u,s), which determine the octet-singlet mixing angles. In the ηη′ ηc sector we find from a fit to the radiative decay rates of mesons that the presence of a cc̄ admixture in η′ is small in disagreement with the point of view that the branching ratio of B→η′ K is enhanced by η′ ηc mixing. ©1999 The American Physical Society.
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Published in American Institute of Physics Inc.
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