Fit of the mixing angles in the six quark model and predictions on theB meson lifetime

Abstract

Experimental data are used to constrain the parameters of the six quark mixing model and of a composite quark model. A combined fit of the mixing angles in the Kobayashi-Maskawa scheme gives sinθ1=0.228±0.011 and error contours around the best values sinθ2=0.12 and sinθ3≈0. From this, a limit of τ B >0.35×10−13s for the mean lifetime of bottom-flavoured hadrons is obtained. For the composite quark model of Katsumata and Tomozawa, a value of τ B =(0.22−0.23)10−13s is derived.