Branching ratios for (first column) and (second column) belonging to the non-SM doublet for different mixing hypotheses. From top to bottom: mixing only with top; mixing with top and charm; mixing only with charm. The mixing parameters have been saturated according to the bounds obtained in [35]. Notice that the BR of in the case of mixing only with top or charm is not identically 1: this is due to the presence of three-body decays, which have not been included in the plot.
