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arXiv · hep-ph/9809204

B--> eta' X_s in the Standard Model

Xiao-Gang He·Guey-Lin Lin
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Abstract

We study $B \to η' X_s$ within the framework of the Standard Model. Several mechanisms such as $b \to η' s g$ through the QCD anomaly, and $b \to η's $ and $B\to η' s \bar q$ 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 $B\to η' X_s$, while the other two mechanisms account for about 15% of the experimental value. The Standard Model prediction for $B\to η' X_s$ is consistent with the CLEO data.

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Xiao-Gang He, Guey-Lin Lin. 1999-04-06. B--> eta' X_s in the Standard Model. https://doi.org/10.1016/s0370-2693(99)00302-0

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