We propose a new mechanism of TeV scale leptogenesis where the chemical
potential of right-handed electron is passed on to the B−L asymmetry of the
Universe in the presence of sphalerons. The model has the virtue that the
origin of neutrino masses are independent of the scale of leptogenesis. As a
result, the model could be extended to explain {\it dark matter, dark energy,
neutrino masses and leptogenesis at the TeV scale}. The most attractive feature
of this model is that it predicts a few hundred GeV triplet Higgs scalar that
can be tested at LHC or ILC.Comment: 5 pages (revtex), double column, 2 eps figures, journal version. To
appear in Phys. ReV.