research article
Evidence of time-dependent CP violation in the decay B^{0}→D^{+}D^{-}
We report a measurement of the CP-odd fraction and the time-dependent CP violation in B-0 -> D*+D*- decays, using 657x10(6) BB 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-perpendicular to=0.125 +/- 0.043(stat)+/- 0.023(syst). From the distributions of the proper-time intervals between a B-0 -> D*+D*- decay and the other B meson in the event, we obtain evidence of CP violation with measured parameters A(D)(+)D(-)=0.15 +/- 0.13(stat)+/- 0.04(syst) and SD*+D*-=-0.96 +/- 0.25(stat)(-0.16)(+0.13)(syst).
Type
research article
Web of Science ID
WOS:000273233000004
Author(s)
Vervink, K.
Aushev, T.
Arinstein, K.
Bakich, A. M.
Balagura, V.
Barberio, E.
Bhardwaj, V.
Bitenc, U.
Date Issued
2009
Publisher
Published in
Volume
80
Issue
11
Article Number
111104(R)
Subjects
Editorial or Peer reviewed
REVIEWED
Written at
EPFL
EPFL units
Available on Infoscience
November 5, 2010
Use this identifier to reference this record