Leptogenesis in the Exceptional Supersymmetric Standard Model: flavour dependent lepton asymmetries

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dc.creatorKing, S. F.
dc.creatorLuo, R.
dc.creatorMiller, D. J.
dc.creatorNevzorov, R.
dc.date2008-06-02
dc.date2008-10-08
dc.date.accessioned2026-07-07T13:02:15Z
dc.date.available2026-07-07T13:02:15Z
dc.descriptionWe calculate flavour dependent lepton asymmetries within the $E_6$ inspired Supersymmetric Standard Model ($\rm E_6SSM$), which has an extra $U(1)_N$ symmetry. In this model, the right-handed neutrino doesn't participate in gauge interactions, allowing it to be used for both the see--saw mechanism and leptogenesis. Extra Higgs, leptons and leptoquarks predicted by the E$_6$SSM contribute to the ordinary lepton CP asymmetries induced by the decays of the lightest right--handed neutrino (and sneutrino) and give rise to a set of extra decay asymmetries. We find that the CP asymmetries can be relatively large, even when the lightest right--handed neutrino is as light as $10^6 {GeV}$.
dc.description40 pages, 9 figures, references added, subsection added
dc.identifierhttps://arxiv.org/abs/0806.0330
dc.identifierhttp://arxiv.org/abs/0806.0330
dc.identifierJHEP 0812:042,2008
dc.identifierdoi:10.1088/1126-6708/2008/12/042
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/226388
dc.subjectHigh Energy Physics - Phenomenology
dc.titleLeptogenesis in the Exceptional Supersymmetric Standard Model: flavour dependent lepton asymmetries
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