Measurement of the branching fraction and polarization for the decay B--->D*0K*-

Phys Rev Lett. 2004 Apr 9;92(14):141801. doi: 10.1103/PhysRevLett.92.141801. Epub 2004 Apr 9.

Abstract

We present a study of the decay B--->D(*0)K(*-) based on a sample of 86 x 10(6) Upsilon(4S)-->BBmacr; decays collected with the BABAR detector at the PEP-II asymmetric-energy B Factory at SLAC. We measure the branching fraction B(B--->D(*0)K(*-))=(8.3+/-1.1(stat)+/-1.0(syst)) x 10(-4), and the fraction of longitudinal polarization in this decay to be Gamma(L)/Gamma=0.86+/-0.06(stat)+/-0.03(syst).