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Determining the sign of the b -> s gamma amplitude

Paolo Gambino·Ulrich Haisch·Mikolaj Misiak
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Abstract

The latest Belle and BaBar measurements of the inclusive B -> X_s l^+ l^- branching ratio have smaller errors and lower central values than the previous ones. We point out that these results indicate that the sign of the b -> s gamma amplitude is the same as in the SM. This underscores the importance of B -> X_s l^+ l^- in searches for new physics, and may be relevant for neutralino dark matter analyses within the MSSM.

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Paolo Gambino, Ulrich Haisch, Mikolaj Misiak. 2005-02-14. Determining the sign of the b -> s gamma amplitude. https://doi.org/10.1103/physrevlett.94.061803

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