Using 355 pb-1 of data collected by the CDF II detector in
p anti-p collisions at s**(1/2) ñ.96 TeV at the Fermilab Tevatron, we
study the fully reconstructed hadronic decays B0_(s) --> D-_(s) pi++
and B0_(s) --> D-_(s) pi++ pi++ pi+-. We present the first measurement
of the ratio of branching fractions B(B0(s) --> D(s)- pi++ pi++_
pi+-)/B(B0 --> D- pi++ pi++ pi+-) 1.05 +/- 0.10(stat.) +/- 0.22(syst.).
We also update our measurement of B(B0(s) --> D(s)- pi++)/B(B0 -->
D- pi++) to 1.13 +/- 0.08(stat.) +/- 0.23(syst.) improving the statistical
uncertainty by more than a factor of two. We find B(B0(s) --> D(s)-
pi++) ÿ3.8 +/- 0.3(stat.) +/- 1.3(syst.)] x 10-3 and B(B0(s) -->
D(s)- pi++ pi++ pi+-) ÿ8.4 +/- 0.8(stat.) +/- 3.2(syst.)] x 10_3.
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Updated: Monday, 2008 November 17 13:52:49 CST automatically from input from carol picciolo