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AbstractAbstract
[en] The authors give a summary about the various contributions which have to be calculated in order to obtain the next-to-leading logarithmic result for the branching ratio BR(B → Xsγ). Combining all these ingredients, which were obtained by different groups, a complete next-to-leading-logarithmic prediction of the inclusive decay rate was recently presented in the literature. The theoretical uncertainty in the partonic decay rate is now at the 10% level, i.e., less than half of the error in the previous leading-logarithmic result. The authors also mention the impact of non-perturbative corrections which scale like 1/mb2 and discuss in some more detail the recently discovered corrections which scale like 1/mc2. It turns out that the 1/mb2-and the 1/mc2 terms lead to corrections to the branching ratio BR(B → Xsγ) well below the 10% level
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Jul 1997; 11 p; International conference on B physics and CP violation; Honolulu, HI (United States); 24-27 Mar 1997; CONF-970352--; CONTRACT AC03-76SF00515; ALSO AVAILABLE FROM OSTI AS DE98059118; NTIS; US GOVT. PRINTING OFFICE DEP
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