Improved measurement of the polarization and time-dependent CP violation in the decay B0 ---> D*+ D*- - INSPIRE

DataBETA

Improved measurement of the polarization and time-dependent CP violation in the decay B0 ---> D+ D-

Belle

Collaboration

Jan, 2009

9 pages

Published in:

Phys.Rev.D 80 (2009) 111104

e-Print:

0901.4057 [hep-ex]

DOI:

10.1103/PhysRevD.80.111104

PDG:

\Gamma _{\perp}/\Gamma

{{\mathit B}^{0}}

\rightarrow

{{\mathit D}^{*+}}{{\mathit D}^{*-}}

Experiments:

KEK-BF-BELLE

View in:

ADS Abstract Service

reference search14 citations

Citations per year

Abstract: (arXiv)

We report an improved measurement of the polarization fraction and the time-dependent CP-violation in B0 -> D*+ D*- decays, using 657 million B B-bar events collected at the Upsilon(4S) resonance with the Belle detector at the KEKB asymmetric-energy e+ e- collider. We measure a CP-odd fraction of R_perp = 0.125+-0.043(stat)+-0.023(syst). From the distributions of the proper-time intervals between a B0 -> D*+ D*- decay and the other B meson in the event, we measure the CP-violation parameters A_D*+D*- = 0.15+-0.13(stat)+-0.04(syst) and S_D*+D*- = -0.96+-0.25(stat)+0.12-0.16(syst).

Note:

Submitted to PRL

11.30.Er
12.15.Ff
13.25.Hw
B0: hadronic decay
CP: violation
time dependence
polarization
BELLE
KEK-B
electron positron: annihilation

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Figures(3)

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