Measurement of the B0 and B- meson lifetimes in ALEPH
  The lifetimed of the Bbar0 and B- meson lifetimes are measured using data recorded on the Z peak with the ALEPH detector at LEP. An improved analysis based on partially reconstructed Bbar0 -> D*+l-nubar and B- -> D0l-nubar decays is presented. 
K. Huttmann (ALEPH collaboration)