Sneutrino brane inflation and leptogenesis

Details Sneutrino brane inflation and leptogenesis Sneutrino brane inflation and leptogenesis

2004-02-26

arxiv.org/abs/hep-ph/0402276v2

Phys.Rev. D69 (2004) 123513

Physics

High Energy Physics

High Energy Physics - Phenomenology

8 pages, RevTeX, 2 figures, references added, final version to appear in Phys. Rev. D

Scientific paper

10.1103/PhysRevD.69.123513

Modifications to the Friedmann equation in brane cosmology can have important implications for early universe phenomena such as inflation and the generation of the baryon asymmetry. We study a simple scenario of chaotic brane inflation where, in a minimal supersymmetric seesaw model, the scalar superpartner of a heavy singlet Majorana neutrino drives inflation and, simultaneously, generates the required lepton asymmetry through its direct out-of-equilibrium decays after the inflationary era. For a gravitino mass in the range 100 GeV - 1 TeV, we find that successful nucleosynthesis and leptogenesis in this framework require that the 5D Planck mass is in the range M5 ~ 10^10 - 10^13 GeV and the reheating temperature Trh ~ 10^6 - 10^8 GeV.

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