Connecting B_d and B_s decays through QCD factorisation and flavour symmetries
High Energy Physics - Phenomenology
2009-11-13 v1
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.
Cite
@article{arxiv.0710.1693,
title = {Connecting B_d and B_s decays through QCD factorisation and flavour symmetries},
author = {S. Descotes-Genon},
journal= {arXiv preprint arXiv:0710.1693},
year = {2009}
}
Comments
Proceedings of the EPS-HEP 2007 Conference, Manchester (UK). 3 pages, 1 figure