Connecting B_d and B_s decays through QCD factorisation and flavour symmetries

Abstract

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.

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

References in corpus (4)

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• Evidence for B+ -> K0barK+ and B0 -> K0K0bar, and Measurement of the Branching Fraction and Search for Direct CP Violation in B+ -> K0pi+
• Extracting alpha from B0(d) --> K0 anti-K0 Decays