Determining the sign of the b -> s gamma amplitude

Details Determining the sign of the b -> s gamma amplitude Determining the sign of the b -> s gamma amplitude

2004-10-11

arxiv.org/abs/hep-ph/0410155v2

Phys.Rev.Lett.94:061803,2005

Physics

High Energy Physics

High Energy Physics - Phenomenology

Journal version, references added, minor modifications. 4 pages, 2 figures

Scientific paper

10.1103/PhysRevLett.94.061803

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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