A gluonic mechanism for B --> D eta'

Details A gluonic mechanism for B --> D eta' A gluonic mechanism for B --> D eta'

2001-09-21

arxiv.org/abs/hep-ph/0109201v1

Phys.Rev. D65 (2002) 054030

Physics

High Energy Physics

High Energy Physics - Phenomenology

17 pages, 4 figures, RevTeX

Scientific paper

10.1103/PhysRevD.65.054030

We present a calculation of the process B --> D eta' within a heavy-light chiral quark model. We assume that the eta' has a large gluonic component, and its coupling is described via the glue-glue-eta' effective vertex. The main contribution comes from the non-factorizable part of the effective weak Lagrangian at quark level. We find, within our model-dependent assumptions, a branching ratio Br(B --> D eta') = (1.7 -- 3.3) 10^(-4), somewhat below the experimental upper bound 9.4 10^(-4).

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