  We compute the right top quark coupling in the aligned two-Higgs-doublet
model. In the Standard Model the real part of this coupling is dominated by
QCD-gluon-exchange diagram, but the imaginary part, instead, is purely
electroweak at one loop. Within this model we show that values for the
imaginary part of the coupling up to one order of magnitude larger than the
electroweak prediction can be obtained. For the real part of the electroweak
contribution we find that it can be up to three orders of magnitude larger than
the standard model one. We also present detailed results of the one loop
analytical computation.
