Constraints fromb→sγ on the left-right symmetric model

Recent results from the CLEO Collaboration on both inclusive and exclusive radiative B decays are used to constrain the parameter space of two versions of the left-right symmetric model. In the first scenario, when the left- and right-handed Cabibbo-Kobayashi-Maskawa mixing matrices are equal, ${\mathit{V}}_{\mathit{L}}$=${\mathit{V}}_{\mathit{R}}$, the radiative B decay data are shown to lead to strong bounds on the ${\mathit{W}}_{\mathit{L}\mathrm{-}}$ ${\mathit{W}}_{\mathit{R}}$ mixing angle that are quite insensitive to either the top quark or ${\mathit{W}}_{\mathit{R}}$ mass. The second scenario examined is that of Gronau and Wakaizumi wherein b-quark decays proceed only via right-handed currents and ${\mathit{V}}_{\mathit{L}}$ and ${\mathit{V}}_{\mathit{R}}$ are quite distinct. For this model, the combined constraints from Fermilab Tevatron ${\mathit{W}}_{\mathit{R}}$ searches, the B lifetime, and radiative B decays lead to a very highly restricted allowed range for the ${\mathit{W}}_{\mathit{L}\mathrm{-}}$ ${\mathit{W}}_{\mathit{R}}$ mixing angle.