
Leftright symmetric models provide a natural framework for neutrinoless double beta (0 nu beta beta) decay. In the analysis of 0 nu beta beta decay in leftright symmetric models, however, it is usually assumed that all neutrinos are light. On the other hand, heavy righthanded neutrinos appear quite naturally in leftright symmetric models and should therefore not be neglected. Assuming the existence of at least one righthanded heavy neutrino, absence of 0 nu beta beta decay of Ge76 currently provides the following limits on the mass and mixing angle of righthanded Wbosons: m(WR) greater than or equal to 1.1 TeV and tan(xi) less than or equal to 4.7 x 10(3) for a particular value of the effective righthanded neutrino mass, [m(N)((V))] = 1 TeV, and in the limit of infinitely massive doubly charged Higgs (Delta()). The effects of the inclusion of the Higgs triplet on 0 nu beta beta decay are also discussed.
