First Observation of the Decay $B^{0}\to D^{*+}D^{*-}$
High Energy Physics - Experiment
2010-04-08 v1
Abstract
We have observed four fully reconstructed B0 -> D*+D*- candidates in 5.8 million Upsilon(4S) -> BBbar decays recorded with the CLEO detector. The background is estimated to be 0.31 +- 0.10 events. The probability that the background could produce four or more signal candidates with the observed distribution among D*+ and D*- decay modes is 1.1 X 10^{-4}. The measured decay rate, Br(B0 -> D*+D*-) = [6.2 +4.0-2.9 (stat) +- 1.0(syst)] X 10^{-4}, is large enough for this decay mode to be of interest for the measurement of a time-dependent CP asymmetry.
Keywords
Cite
@article{arxiv.hep-ex/9811027,
title = {First Observation of the Decay $B^{0}\to D^{*+}D^{*-}$},
author = {M. Artuso},
journal= {arXiv preprint arXiv:hep-ex/9811027},
year = {2010}
}
Comments
10 pages, postscript file also available through http://w4.lns.cornell.edu/public/CLNS