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Abstract
We provide a general analysis of time reversal invariance violation in the exclusive
semileptonic B decays B to D l nu and B to D* l nu. Measurements of the lepton and
D* polarizations can be used to search for and identify non-standard model sources
of T violation. Upper limits are placed on the T-odd polarization observables in both
the supersymmetric R-parity conserving and R-parity breaking theories, as well as
in some non-supersymmetric extensions of the standard model, including multi-Higgs-doublet
models, leptoquark models, and left-right symmetric models. It is noted that many
of these models allow for large T-violating polarization effects which could be within
the reach of the planned B factories.