Branching Fraction, Polarization and CP-Violating Asymmetries in B0 -> D*+ D*- Decays

Details Branching Fraction, Polarization and CP-Violating Asymmetries in B0 -> D*+ D*- Decays Branching Fraction, Polarization and CP-Violating Asymmetries in B0 -> D*+ D*- Decays

2005-01-15

arxiv.org/abs/hep-ex/0501037v1

Phys.Lett.B618:34-42,2005

Physics

High Energy Physics

High Energy Physics - Experiment

14 pages, 4 figures, submitted to Phys. Lett. B

Scientific paper

10.1016/j.physletb.2005.05.052

We present measurements of the branching fraction, the polarization parameters and CP-violating asymmetries in B0 -> D*+ D*- decays using a 140/fb data sample collected at the Upsilon(4S) resonance with the Belle detector at the KEKB energy-asymmetric e+e- collider. We obtain B(B0 -> D*+ D*-) = [0.81 +- 0.08(stat) +- 0.11(syst)] x 10^{-3}, R\perp = 0.19 +- 0.08(stat) +- 0.01(syst), R0 = 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.

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