A New Measurement of $B\to D^{*}π$ Branching Fractions

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  • 25 June 1997
Abstract
The unique kinematics of BB production at the Upsilon(4S) allow reconstruction of all kinematic quantities in the decay sequence B -> D* pi, D* -> D pi without reconstructing the D decay. Using 3.1 fb^{-1} accumulated at the Upsilon(4S) by the CLEO-II detector,we report measurements of BR(B0 -> D*+ pi-) = (2.81 +/- 0.11 +/- 0.21 +/- 0.05) x 10^{-3} and BR(B- -> D*0 pi-) = (4.34 +/- 0.33 +/- 0.34 +/- 0.18) x 10^{-3}.

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