B → η′X s in the standard model

Xiao Gang He*, Guey-Lin Lin

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

17 Scopus citations


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.

Original languageEnglish
Pages (from-to)123-128
Number of pages6
JournalPhysics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Issue number1-2
StatePublished - 13 May 1999

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