Gauge-boson masses and mixings in left-right--symmetric models

This paper reports a study of SU(2)/sub L/xSU(2)/sub r/xU(1)/sub B/-L gauge models with a completely general Higgs sector. The scalars which are consistent with the known low-energy phenomenology are determined. The results are used to obtain useful constraints on the W/sub L/-W/sub R/ mixing angle, xi. In particular, the stringent upper limit xi< or =0.002 is derived.