Branching fraction, polarization and C P-violating asymmetries in B-0 -> D*D+*(-) decays

We present measurements of the branching fraction, the polarization parameters and CP-violating asymmetries in B-0-> D*+D*(-) decays using a 140 fb(-1) data sample collected at the gamma(4S) resonance with the Belle detector at the KEKB energy-asymmetric e+e(-) collider. We obtain B(B-0 -> D*D+*(-)) = [0.81 +/- 0.08(stat)+/- 0.11(syst)] x 10(-3), R-perpendicular to = 0.19 +/- 0.08(stat)+/- 0.01(syst), R-0 = 0.57 +/- 0.08(stat)+/- 0.02(syst), S = -0.75 +/- 0.56(stat)+/- 0.12(syst) and A = -0.26 +/- 0.26(stat)+/- 0.06(syst). Consistency with Standard Model expectations is also discussed. (c) 2005 Published by Elsevier B.V.