標題: B -> eta ' X-s in the standard model
作者: He, XG
Lin, GL
物理研究所
Institute of Physics
公開日期: 13-五月-1999
摘要: We study B --> eta'X-s within the framework of the Standard Model. Several mechanisms such as b --> eta'sg through the QCD anomaly, and b --> eta's and B --> eta's (q) over bar 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 --> eta'X-s, while the other two mechanisms account for about 15% of the experimental value. The Standard Model prediction for B --> eta'X-s is consistent with the CLEO data. (C) 1999 Elsevier Science B.V. All rights reserved.
URI: http://hdl.handle.net/11536/31340
ISSN: 0370-2693
期刊: PHYSICS LETTERS B
Volume: 454
Issue: 1-2
起始頁: 123
結束頁: 128
顯示於類別:期刊論文


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  1. 000080842900019.pdf