  In a recent paper we performed a comprehensive study of the impact of
new-physics operators with different Lorentz structures on $\BDstarellnu$
decays, $\ell = e^-, \mu^-, \tau^- $, involving the $b \to c l \nu_\ell$
transition. In this work we extend the previous calculation by including tensor
operators. In the case of $\BDstartaunu $, we present the full three angle and
$q^2$ angular distribution with tensor new physics operators with complex
couplings. The impact of the tensor operators on various observables in the
angular distribution, specially the azimuthal observables including the CP
violating triple product asymmetries are discussed. It is shown that these
azimuthal observables are very useful in discriminating different new physics
operators. Finally we consider new physics leptoquark models with tensor
interactions and show how the presence of additional scalar operators modify
the predictions of the tensor operators.
