Work supported in part by US Department of Energy contract DE-AC02-76SF00515 STATUS OF SM CALCULATIONS OF B → S TRANSITIONS

نویسنده

  • TOBIAS HURTH
چکیده

We report recent progress in SM calculations of b → s transitions. We discuss the first NNLL prediction of the B̄ → Xsγ branching ratio, including important additional subtleties due to nonperturbative corrections and logarithmically-enhanced cut effects, and also recent results on the inclusive mode B̄ → Xsll. Moreover, new results on the corresponding exclusive modes are reviewed. Finally, we comment on the present status of the so-called B → Kπ puzzle in hadronic b → s transitions.

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تاریخ انتشار 2007