  Low scale leptogenesis scenarios are difficult to verify due to our inability
to relate the parameters involved in the early universe processes with the low
energy or collider observables. Here we show that one can in principle relate
the parameters giving rise to the transient $CP$ violating phase involved in
leptogenesis with those that can be deduced from the observation of electric
dipole moment (EDM) of the electron. We work out the details of this in the
context of the left right symmetric supersymmetric model (LRSUSY) which
provides a strong connection between such parameters. In particular, we show
that baryon asymmetry requirements imply the scale $M_{B-L}$ of $U(1)_{B-L}$
symmetry breaking to be larger than $10^{4.5}~\mathrm{GeV}$. Moreover the scale
$M_R$ of $SU(2)_R$ symmetry breaking is tightly constrained to lie in a narrow
band significantly below $M_{B-L}^2 / M_{EW}$. These are the most stringent
constraints on the parameter space of LRSUSY model being considered.
