Estimate of SU(3) flavour symmetry breaking in B_s -> K^+ K^- vs. B_d -> pi^+π^- decay

Details Estimate of SU(3) flavour symmetry breaking in B_s -> K^+ K^- vs. B_d -> pi^+π^- decay Estimate of SU(3) flavour symmetry breaking in B_s -> K^+ K^- vs. B_d -> pi^+π^- decay

2003-08-05

arxiv.org/abs/hep-ph/0308040v1

eConf C0304052 (2003) FO001

Physics

High Energy Physics

High Energy Physics - Phenomenology

3 pages, LaTeX, Talk at the Workshop on the CKM Unitarity Triangle, IPPP Durham, April 2003 (eConfC0304052)

Scientific paper

I estimate the SU(3) flavour symmetry breaking in the ratio of
penguin-to-tree ratios of the decays B_s\to K^+ K^- and B_d\to\pi^+\pi^-, given
an assumption on the flavour symmetry breaking of the hadronic input
parameters. The decay amplitudes are calculated in QCD factorization.
Implications for the determination of gamma are discussed.

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