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Advances in High Energy Physics
Volume 2014, Article ID 689719, 11 pages
Research Article

Cosmic Baryon Asymmetry in Different Neutrino Mass Models with Mixing Angles

Department of Physics, Tezpur University, Tezpur, Assam 784028, India

Received 31 July 2014; Revised 8 November 2014; Accepted 21 November 2014; Published 21 December 2014

Academic Editor: Filipe R. Joaquim

Copyright © 2014 Ng. K. Francis. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. The publication of this article was funded by SCOAP3.


We investigate the comparative studies of cosmological baryon asymmetry in different neutrino mass models with and without by considering the three-diagonal form of Dirac neutrino mass matrices and the three aspects of leptogenesis, unflavoured, flavoured, and nonthermal. We found that the estimations of any models with are consistent in all the three stages of calculations of leptogenesis and the results are better than the predictions of any models without which are consistent in a piecemeal manner with the observational data in all the three stages of leptogenesis calculations. For the normal hierarchy of Type-IA with charged lepton matrix, model with and without predicts inflaton mass required to produce the observed baryon asymmetry to be  GeV and  GeV, and the corresponding reheating temperatures are  GeV and  GeV respectively. These predictions are not in conflict with the gravitino problem which required the reheating temperature to be below  GeV. And these values apply to the recent discovery of Higgs boson of mass 125 GeV. One can also have the right order of relic dark matter abundance only if the reheating temperature is bounded to below  GeV.