RareBdecays in left-right-symmetric models

The manifestation of the higher-order effects induced by the flavor-changing neutral currents in $B$ decays is analyzed in the left-right-symmetric generalization of the electroweak unification. In such left-right models the effects of the right-handed currents and the mixing between the two gauge bosons give rise to some enhancement relative to the standard model in the branching ratio of the rare processes $b\to s\gamma$, $b\to \mathrm{sg}$, $b\to s{l}^{+}{l}^{-}$, and $b\to s\nu \overline{\nu }$, in particular if the present bounds on the $W_R$ mass and on the mixing $\xi$ turn out to be too severe. We can conclude that this kind of rare $B$ physics can put interesting constraints on these models.