Please use this identifier to cite or link to this item: https://hdl.handle.net/2440/58123
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Type: Journal article
Title: Direct CP violation, branching ratios and form factors B → π, B → K in B decays
Other Titles: Direct CP violation, branching ratios and form factors B ---> PI, B ---> K in B decays
Author: Leitner, O.
Guo, X.
Thomas, A.
Citation: Journal of Physics G: Nuclear and Particle Physics, 2005; 31(3):199-253
Publisher: IOP Publishing Ltd
Issue Date: 2005
ISSN: 0954-3899
1361-6471
Statement of
Responsibility: 
O. Leitner, X.-H. Guo and A.W. Thomas
Abstract: The B → π and B → K transitions involved in hadronic B decays are investigated in a phenomenological way through the framework of QCD factorization. By comparing our results with experimental branching ratios from the BELLE, BABAR and CLEO collaborations for all the B decays including either a pion or a kaon, we propose boundaries for the transition form factors B → π and B → K depending on the CKM matrix element parameters ρ and η. From this analysis, the form factors required to reproduce the experimental data for branching ratios are FB→π = 0.31±0.12 and FB→K = 0.37 ± 0.13. We calculate the direct CP violating asymmetry parameter, aCP, for B → π+π-π and B → π+π - K decays, in the case where ρ-ω mixing effects are taken into account. Based on these results, we find that the direct CP asymmetry for B- → π+π-π-, →B0 → π+π-π0, B- → π+π-K- and B̄0 → π+π-K̄0, reaches its maximum when the invariant mass π+π- is in the vicinity of the ω meson mass. The inclusion of ρ-ω mixing provides an opportunity to erase, without ambiguity, the phase uncertainty mod(ω) in the determination of the CKM angles α in the case of b → u and γ in the case of b → s. © 2005 IOP Publishing Ltd.
Keywords: High Energy Physics - Phenomenology (hep-ph)
Rights: © IOP Publishing 2005.Submitted to Cornell University’s online archive www.arXiv.org in 2005 by Olivier Leitner.Post-print sourced from www.arxiv.org.
DOI: 10.1088/0954-3899/31/3/004
Published version: http://arxiv.org/abs/hep-ph/0411392
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Chemistry and Physics publications

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