Gauged B-L symmetry and baryogenesis via leptogenesis at TeV scale

It is shown that the requirement of preservation of baryon asymmetry does not rule out a scale for leptogenesis as low as 10 TeV. The conclusions are compatible with see-saw mechanism if, for example, the pivot mass scale for neutrinos is approximate to10(-2) that of the charged leptons. We explore the parameter space m(1)- M-1 of relevant light and heavy neutrino masses by solving Boltzmann equations. A viable scenario for obtaining baryogenesis in this way is presented in the context of gauged B-L symmetry