NONSPECTATOR CONTRIBUTION - A MECHANISM FOR INCLUSIVE B-]X-S-ETA' ANDEXCLUSIVE B-]K(ASTERISK)ETA' DECAYS - ART. NO. 014015

We propose a mechanism that can explain the large B(B-->X(s)eta')appro ximate to 10(-3) observed by CLEO. In this mechanism, eta' is produced by the fusion of two gluons: one from the QCD penguin diagram b-->sg and the other one emitted by the light quark inside the B meson. The i nclusive decay rate which is calculated via the factorization assumpti on can easily account for the observed branching ratio. We also estima te the exclusive branching ratio B(B-->K eta')=7.0X10(-5) which is in good agreement with the experimental data and present our prediction f or the K mode B(B-->K*eta')=3.4X10(-5). [S0556-2821(98)05213-8].