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

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

2004-10-05

arxiv.org/abs/hep-ph/0410075v2

Phys.Rev. D71 (2005) 023507

Physics

High Energy Physics

High Energy Physics - Phenomenology

15 pages, 4 figures, references added, match with journal version

Scientific paper

10.1103/PhysRevD.71.023507

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 $\approx 10^{-2}$ that of the charged leptons. We explore the parameter space $\tilde{m}_1$-$M_1$ 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.

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