Observation of Exclusive Decay Modes ofb-Flavored Mesons

Abstract
B-meson decays to final states consisting of a D0 or D*± and one or two charged pions have been observed. The charged-B mass is 5270.8 ± 2.3 ± 2.0 MeV and the neutral-B mass is 5274.2 ± 1.9 ± 2.0 MeV.