We report the first reconstruction in hadron collisions of
the suppressed decays B-→D(→K+π-)K- and B-→D(→K+π-)π-,
sensitive to the Cabibbo-Kobayashi-Maskawa phase γ, using data
from 7 fb-1 of integrated luminosity collected by the CDF II
detector at the Tevatron collider. We reconstruct a signal for the
B-→D(→K+π-)K- suppressed mode with a significance of 3.2 standard
deviations, and measure the ratios of the suppressed to favored
branching fractions R(K)=[22.0±8.6(stat)±2.6(syst)]×10-3,
R+(K)=[42.6±13.7(stat)±2.8(syst)]×10-3,
R-(K)=[3.8±10.3(stat)±2.7(syst)]×10-3 as well as the direct
CP-violating asymmetry A(K)=-0.82±0.44(stat)±0.09(syst) of this
mode. Corresponding quantities for B-→D(→K+π-)π- decay are also
reported.
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Updated: Thursday, 2012 January 26 15:36:04 CST automatically from input from "Stephanie A. Schuler"