SOME PHENOMENOLOGICAL ASPECTS OF THE SU(2)QXSU(2)1XU(1)Y MODEL

We examine the implications of the recently proposed un-unified SU(2)q×SU(2)l×U(1)Y model for the extra-gauge-boson decay widths and hadronic production rates, the e+e-+- and bb» asymmetries, the B-meson semileptonic branching fraction, B0-B»0 mixing, and the CP-violating parameter. A perturbative requirement gives the bound sin0.22 on the new mixing angle. Current searches at the Fermilab Tevatron collider for an extra Z boson can place a mass bound MZH250 GeV. The hadronic decays of WH, ZH produced in p»p collisions may be observable as enhancements in the two-jet invariant-mass distribution. The enhanced low-energy nonleptonic interaction improves the agreement with experiment of the predicted B-meson semileptonic branching fraction. © 1990 The American Physical Society.