Implications for B→ηK and B→glueball+K modes from observed large B→η′K+X

The unexpectedly large branching ratios for B→η′K (η′Xs) decays could be of gluonic origin. We study the implications for B→ηK (ηXs) and PK (PXs), where P is the pseudoscalar glueball. In the mechanism proposed by Fritzsch, large branching ratios are predicted for these modes. The B→ηK rate is barely within the experimental limit, and B→PK, PXs could be at the 0.1% and 1% level, respectively. Smaller but less definite results are found for the mechanism of g∗→η′g via the gluon anomaly.