We study B → η′X s within the framework of the Standard Model. Several mechanisms such as b → η′sg through the QCD anomaly, and b → η′s and B → η′sq̄ arising from four-quark operators are treated simultaneously. Using QCD equations of motion, we relate the effective Hamiltonian for the first mechanism to that for the latter two. By incorporating next-to-leading-logarithmic(NLL) contributions, the first mechanism is shown to give a significant branching ratio for B → η′X s , while the other two mechanisms account for about 15% of the experimental value. The Standard Model prediction for B → η′X s is consistent with the CLEO data.
|Number of pages||6|
|Journal||Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics|
|State||Published - 1 Jan 1999|