Status of SM calculations of b > s transitions

Details Status of SM calculations of b > s transitions Status of SM calculations of b > s transitions

2007-03-21

arxiv.org/abs/hep-ph/0703226v2

Int.J.Mod.Phys.A22:1781-1795,2007

Physics

High Energy Physics

High Energy Physics - Phenomenology

10 pages, 6 figures, minor changes, published version

Scientific paper

10.1142/S0217751X07036476

We report recent progress in SM calculations of $b \to s$ transitions. We discuss the first NNLL prediction of the $\bar B \to X_s \gamma$ branching ratio, including important additional subtleties due to non-perturbative corrections and logarithmically-enhanced cut effects, and also recent results on the inclusive mode $\bar B \to X_s \ell^+ \ell^-$. Moreover, new results on the corresponding exclusive modes are reviewed. Finally, we comment on the present status of the so-called $B \to K \pi$ puzzle in hadronic $b \to s$ transitions

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