Observation of a Broad L=1 cq State in B- -> D*+π-π- at CLEO
Using 4.7 fb-1 of data taken at CESR at energies at and near the Υ(4S) we have studied the decay B- -> D*+π-π- (and its conjugate). We observe a new, broad charmed meson state, which we interpret as D01(j=1/2), in its decay to D*+π-. Our preliminary results indicate the mass and width of this L=1 state to be m = (2461+41-34+/-10+/-32)MeV and Γ = (290+101-79+/-26+/-36)MeV, with the third uncertainty associated with the parameterization of the relative strong phases. In addition we have measured several new branching fractions of charged B mesons.
Nuclear Physics A
- Pub Date:
- January 2000
- High Energy Physics - Experiment
- 7 pages postscript, also available through http://w4.lns.cornell.edu/public/CLNS