Flavour-dependent leptogenesis with reheating
- Max-Planck-Institut fuer Physik (Werner-Heisenberg-Institut) Foehringer Ring 6, D-80805 Munich (Germany)
Upper bounds on the reheat temperature of the early universe, as they appear for example in classes of supergravity models, impose severe constraints on the thermal leptogenesis mechanism. To analyse these constraints, we extend the flavour-dependent treatment of leptogenesis to include reheating. We solve the flavour-dependent Boltzmann equations to obtain the leptogenesis efficiency as a function of the flavour dependent washout parameter m-tilde{sub 1,{alpha}} and of m{sub N{sub 1}}/T{sub RH}, the ratio of the mass of the lightest right-handed neutrino over the reheat temperature, and calculate the minimal values of the reheat temperature compatible with thermal leptogenesis in type I and type II seesaw scenarios.
- OSTI ID:
- 21039348
- Journal Information:
- AIP Conference Proceedings, Vol. 957, Issue 1; Conference: PASCOS 2007: 13. international symposium on particles, strings and cosmology, London (United Kingdom), 2-7 Jul 2007; Other Information: DOI: 10.1063/1.2823802; (c) 2007 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 0094-243X
- Country of Publication:
- United States
- Language:
- English
Similar Records
Successful N{sub 2} leptogenesis with flavour coupling effects in realistic unified models
Supersymmetric SO(10)-inspired leptogenesis and a new N{sub 2}-dominated scenario