Leptogenesis in the E6SSM
Leptogenesis in the E6SSM
We investigate leptogenesis in the E6 inspired Exceptional Supersymmetric Standard Model (E6SSM). Right-handed (RH) neutrinos are singlets under the Standard Model gauge groups and the extra U1 gauge group of the E6SSM at low energies and are therefore not involved in gauge interactions. This allows them to have Majorana mass large enough for the seesaw mechanism and leptogenesis. In addition to canonical leptogenesis, the RH neutrinos may decay into exotic leptons and leptoquarks, the subsequent decays of which lead to extra lepton asymmetries. We find that the lepton asymmetry can be drastically enhanced as compared with that in the SM and MSSM?
particle physics and field theory
082009-[3pp]
King, S.F.
f8c616b7-0336-4046-a943-700af83a1538
Luo, R.
ef33e8b4-300d-4aab-85df-0057412d5b66
Miller, D.J.
a230d4ba-cdd8-4e3b-8d96-3bc31863b7a8
Nevzorov, R.
29e55377-613c-4b07-b29a-49fedd1f7544
2008
King, S.F.
f8c616b7-0336-4046-a943-700af83a1538
Luo, R.
ef33e8b4-300d-4aab-85df-0057412d5b66
Miller, D.J.
a230d4ba-cdd8-4e3b-8d96-3bc31863b7a8
Nevzorov, R.
29e55377-613c-4b07-b29a-49fedd1f7544
King, S.F., Luo, R., Miller, D.J. and Nevzorov, R.
(2008)
Leptogenesis in the E6SSM.
Journal of Physics: Conference Series, 110 (8), .
(doi:10.1088/1742-6596/110/8/082009).
Abstract
We investigate leptogenesis in the E6 inspired Exceptional Supersymmetric Standard Model (E6SSM). Right-handed (RH) neutrinos are singlets under the Standard Model gauge groups and the extra U1 gauge group of the E6SSM at low energies and are therefore not involved in gauge interactions. This allows them to have Majorana mass large enough for the seesaw mechanism and leptogenesis. In addition to canonical leptogenesis, the RH neutrinos may decay into exotic leptons and leptoquarks, the subsequent decays of which lead to extra lepton asymmetries. We find that the lepton asymmetry can be drastically enhanced as compared with that in the SM and MSSM?
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Published date: 2008
Keywords:
particle physics and field theory
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Local EPrints ID: 144099
URI: http://eprints.soton.ac.uk/id/eprint/144099
ISSN: 1742-6588
PURE UUID: fd04e580-9067-4845-9e84-e91aae0d89e6
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Date deposited: 26 Apr 2011 13:22
Last modified: 14 Mar 2024 00:45
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Author:
R. Luo
Author:
D.J. Miller
Author:
R. Nevzorov
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