Connecting B_d and B_s decays through QCD factorisation and flavour symmetries

Details Connecting B_d and B_s decays through QCD factorisation and flavour symmetries Connecting B_d and B_s decays through QCD factorisation and flavour symmetries

2007-10-09

arxiv.org/abs/0710.1693v1

Physics

High Energy Physics

High Energy Physics - Phenomenology

Proceedings of the EPS-HEP 2007 Conference, Manchester (UK). 3 pages, 1 figure

Scientific paper

10.1088/1742-6596/110/2/022009

We analyse B_{d,s} -> K(*)0 K(*)0 modes within the SM, relating them in a controlled way through SU(3)-flavour symmetry and QCD-improved factorisation. We propose a set of sum rules for such penguin-mediated decays to constrain some CKM angles. We determine B_s -> KK branching ratios and CP-asymmetries as functions of A_{dir}(B_d -> K0 \bar{K}0). Applying the same techniques to B_{d,s}-> K*0 \bar{K}*0, we outline strategies to determine the B_s mixing angle.

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