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Type: Journal article
Title: Enhanced direct CP violation in B±,⁰→π+π-K±,⁰
Other Titles: Enhanced direct CP violation in B+/-,(0)-> pi+pi-K+/-,(0)
Author: Leitner, O.
Guo, X.
Thomas, A.
Citation: Physical Review. D. Particles, Fields, Gravitation and Cosmology, 2002; 66(9):096008-1-096008-19
Publisher: American Physical Soc
Issue Date: 2002
ISSN: 1550-7998
Organisation: Special Research Centre for the Subatomic Structure of Matter
Abstract: We investigate in a phenomenological way direct CP violation in the hadronic decays B±,0→π+π-K±,0 where the effect of ρ-ω mixing is included. If Nceff (the effective parameter associated with factorization) is constrained using the most recent experimental branching ratios (to ρ0K0, ρ±K∓, ρ±K0, ρ0K± and ωK±) from the BABAR, BELLE and CLEO Collaborations, we get a maximum CP violating asymmetry amax in the range -25% to +49% for B-→π+π-K- and -24% to +55% for B0→π+π-K0. We also find that CP violation is strongly dependent on the Cabibbo-Kobayashi-Maskawa matrix elements. Finally, we show that the sign of sinδ is always positive in the allowed range of Nceff and hence, a measurement of direct CP violation in B±,0→π+π-K±,0 would remove the mod(π) ambiguity in arg[-VtsVtb⋆/VusVub⋆].
Rights: ©2002 American Physical Society
RMID: 0020021682
DOI: 10.1103/PhysRevD.66.096008
Appears in Collections:Special Research Centre for the Subatomic Structure of Matter publications

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