Non-spectator contribution: A mechanism for inclusive B-> Xs eta' and exclusive B-> K(*) eta' decays
Abstract
We propose a mechanism which can explain the large BR(B-> Xs eta')~ 10(-3) observed by CLEO. In this mechanism, eta' is produced by the fusion of two gluons, one from QCD penguin b->sg and the other one emitted by the light quark inside the B meson. The inclusive decay rate which is calculated via using the factorization assumption, can easily account for the observed branching ratio. We also estimate the exclusive branching ratio BR(B->K eta')=7.0X10(-5) which is in good agreement with the experimental data and present our prediction for K* mode BR(B->K* eta')=3.4X10(-5).
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