RESOLVING AMBIGUITY IN CP-VIOLATION PARAMETERS

Using present data on charmless B-meson decays, B-BBAR mixing, and CP-violating K-KBAR mixing, and the constraint m(t) = 140 +/- 40 GeV/c2 derived from a fit to electroweak data, we extract a value of f(B) (the B-meson decay constant), and obtain corresponding regions of parameters for elements of the Cabibbo-Kobayashi-Maskawa matrix. Two solutions are found: one with f(B) almost-equal-to f(pi) (similar to values obtained in potential models) and the other with f(B) almost-equal-to 1.7f(pi) (closer to the large values favored in recent lattice calculations). Prospects for resolving the ambiguity via measurements of the B --> tau-nu and K+ --> pi+-nu-nu-BAR branching ratios, B(s)-B(s)BAR mixing, CP violation in B --> J/psi-K(S) and B --> pi-pi, and epsilon'/epsilon in the kaon system are discussed.