  We consider the TeV scale left-right symmetric theory which can accommodate
low scale seesaw mechanisms consistent with neutrino oscillation data and find
new physics contributions to neutrinoless double beta decay. The model
facilitates natural type-II seesaw dominance and the presence of extra
particles make the Dirac neutrino mass matrix $M_D$ large that leads to large
light heavy neutrino mixing. The spontaneous symmetry breaking through
doublets, triplets and bidoublet scalars at TeV scale offers rich phenomenology
accessible to LHC. From the numerical studies of the new physics contributions
to neutrinoless double beta decay we derive a lower limit on absolute scale of
lightest neutrino mass and find that normal hierarchy (NH) pattern is favorable
taking into account the cosmology and oscillation data.
