Status of SM Calculations of b to s Transitions

[摘要] We report recent progress in SM calculations of b {yields} s transitions. We discuss the first NNLL prediction of the {bar B} {yields} X{sub 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} {yields} X{sub s}{ell}{sup +}{ell}{sup -}. Moreover, new results on the corresponding exclusive modes are reviewed. Finally, we comment on the present status of the so-called B {yields} K{pi} puzzle in hadronic b {yields} s transitions.

[发布日期] 2007-04-04

[学科分类] 物理（综合）

[关键词] BRANCHING RATIO;ANTIMESONS;B MESONS;PARTICLE DECAY Phenomenology-HEP;HEPEX;HEPPH;HEPTH