  A new mechanism for baryogenesis is proposed in the context of an extended
Brans-Dicke (BD) theory. We generalize the BD scalar to complex field with CP
violating coupling to curvature and show that the charged BD current can be
enhanced during inflationary epoch. After inflation the current decays (via
tree level interactions) into the standard model particles. When the BD scalar
is charged under baryon and/or lepton number, the decay produces a net baryon
number. Rather generically a sufficiently large scalar current can be produced
during inflation to account for the observed baryon asymmetry of the Universe.
Our baryogensis scenario can in an elegant way be incorporated into a model of
extended inflation.
