B(D)(0)-(B)OVER-BAR(D)(0) MIXING AND THE PREDICTION OF THE TOP-QUARK MASS IN AN INDEPENDENT-PARTICLE POTENTIAL MODEL

Considering B(d)0-B(d)0BAR mixing in a potential model of independent quarks by taking the effective interaction Hamiltonian of the standard Salam-Weinberg-Glashow model and subsequently diagonalizing the corre sponding mass matrix with respect to B(d)0 and B(d)0BAR states, we obt ain an expression for the mass difference DELTAM(Bd0) in terms of the t-quark mass m(t). Using the recent observation of the mixing paramete r X(d)=0.72+/-0.15 by the ARGUS Collaboration, we predict the lower bo und on the top-quark mass as m(t) greater-than-or-equal-to 149 GeV. Fu rther, a consideration of experimental mass difference DELTAM(Bd0)=(4. 0+/-0.8) X 10(-13) GeV also leads to m(t)=167(-17)+16 GeV which is in agreement with the recent experimental bound as well as other theoreti cal predictions. However, such a prediction of m(t) that utilizes the experimental value of the CKM matrix element \V(td)\ may not appear co nvincing in view of the large uncertainties in the measurement of \V(t d)\ so far reported. Therefore using the range of m(t) values within i ts bounds predicted from other independent works, we make a reasonable estimation of \V(td)\.