Freed Leptogenesis

Details Freed Leptogenesis Freed Leptogenesis

2011-07-06

arxiv.org/abs/1107.1087v4

Mod.Phys.Lett. A26 (2011) 2983-2996

Physics

High Energy Physics

High Energy Physics - Phenomenology

15 pages, 3 figures. Error in Eq. (19) is corrected, the results are unchanged

Scientific paper

10.1142/S0217732311037340

Economical extensions of the Standard Model (SM), in which the famous Davidson-Ibarra bound on the CP asymmetry relevant for leptogenesis may be significantly relaxed by the loop effects, comparing to predictions of the SM extended only by right-handed neutrinos with hierarchical masses, are discussed. This leads to decreasing of the lower bound on the heavy neutrino masses and increasing of the upper bound on the light neutrino masses. In addition, the considered theory may help to solve the dark matter problem.

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