Using a sample of 232×10^6 Υ(4S)→BB̅ events collected with the BABAR detector at the PEP-II B factory we study the decay B-→[K+π-]DK*- where the K+π- is either from a Cabibbo-favored D̅ 0 decay or doubly-suppressed D0 decay. We measure two observables that are sensitive to the Cabibbo-Kobayashi-Maskawa angle γ; the ratio R of the charge-averaged branching fractions for the suppressed and favored decays; and the charge asymmetry A of the suppressed decays: R=0.046±0.031(stat)±0.008(syst), A=-0.22±0.61(stat)±0.17(syst).
Study of b -> c interference in the decay B-->[K+pi(-)](D)K*(-)
SIMI, GABRIELE;MARGONI, MARTINO;SIMONETTO, FRANCO;STROILI, ROBERTO;VOCI, CESARE;
2005
Abstract
Using a sample of 232×10^6 Υ(4S)→BB̅ events collected with the BABAR detector at the PEP-II B factory we study the decay B-→[K+π-]DK*- where the K+π- is either from a Cabibbo-favored D̅ 0 decay or doubly-suppressed D0 decay. We measure two observables that are sensitive to the Cabibbo-Kobayashi-Maskawa angle γ; the ratio R of the charge-averaged branching fractions for the suppressed and favored decays; and the charge asymmetry A of the suppressed decays: R=0.046±0.031(stat)±0.008(syst), A=-0.22±0.61(stat)±0.17(syst).
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