Leptogenesis in B-L gauged supersymmetry with MSSM Higgs sector

We study a modified version of a U(1)B-L gauged MSSM that was recently shown to produce a new source of leptogenesis through the CP asymmetry of sneutrinos and antisneutrinos [K. S. Babu, Yanzhi Meng, and Zurab Tavartkiladze, Phys. Lett. B 681, 37 (2009)]. By taking all superpotential terms and couplings between the MSSM Higgs and B-L scalar sectors into account we find that the model allows a large enough CP violation to explain the observed baryon number to entropy ratio. Monte Carlo analysis shows that a large amount of CP violation can be produced in the decays of the B-L Higgs bosons and that there are two dominating channels that drive CP violation.