Study of the decays $B^0 \to D^{*}$ + $D^{*-}$

Lipeles, Elliot David; Schmidtler, M.; Shapiro, A.; Sun, W.M.; Weinstein, A.J.; Wuerthwein, Frank K.; Jaffe, D.E.; Masek, G.; Paar, H.P.; Potter, E.M.

doi:10.1103/PhysRevD.62.032005

Study of the decays $B^0 \to D^{}$ + $D^{-}$

CLEO

Collaboration

Feb, 2000

21 pages

Published in:

Phys.Rev.D 62 (2000) 032005

e-Print:

hep-ex/0002065 [hep-ex]

DOI:

10.1103/PhysRevD.62.032005

PDG:

{{\mathit B}^{0}}

\rightarrow

{{\mathit D}^{*}{(2010)}^{+}}{{\mathit D}^{*}{(2010)}^{-}}

Report number:

SLAC-REPRINT-2000-083,
CLNS-00-1663,
CLEO-00-02

Experiments:

CESR-CLEO-II

View in:

ADS Abstract Service

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Abstract: (arXiv)

The decays B0 --> D*+D*-, B0 --> D*+D- and B0 --> D+D- are studied in 9.7 million Y(4S) --> BBbar decays accumulated with the CLEO detector. We determine Br(B0 --> D*+D*-) = (9.9+4.2-3.3+-1.2)e-4 and limit Br(B0 --> D*+D-) < 6.3e-4 and Br(B0 --> D+D-) < 9.4e-4 at 90% confidence level (CL). We also perform the first angular analysis of the B0 --> D*+D*- decay and determine that the CP-even fraction of the final state is greater than 0.11 at 90% CL. Future measurements of the time dependence of these decays may be useful for the investigation of CP violation in neutral B meson decays.

Note:

21 pages, 5 figures, submitted to Phys. Rev. D

electron positron: colliding beams
electron positron: annihilation
Upsilon(10570): electroproduction
B0: pair production
B0: hadronic decay
B0: branching ratio
charmed meson: pair production
D*(2010): hadronic decay
D: hadronic decay
angular distribution

References(30)

Figures(7)

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