Universal Extra Dimension models with right-handed neutrinos

Details Universal Extra Dimension models with right-handed neutrinos Universal Extra Dimension models with right-handed neutrinos

2008-10-03

arxiv.org/abs/0810.0700v1

AIP Conf.Proc.1006:122-125,2008

Physics

High Energy Physics

High Energy Physics - Phenomenology

The proceedings of UAE - CERN Workshop On High Energy Physics And Applications, 26-28 Nov 2007, Al Ain, Abu Dhabi, United Arab

Scientific paper

10.1063/1.2927597

Relic abundance of dark matter is investigated in the framework of universal extra dimension (UED) models with right-handed neutrinos. These models are free from the KK graviton problem in the minimal UED model. The first KK particle of the right-handed neutrino is a dark matter candidate in this framework. When ordinary neutrino masses are large enough such as the degenerate mass spectrum case, the dark matter relic abundance can increase significantly. The scale of the extra dimension consistent with cosmological observations can be 500 GeV in the minimal setup of UED models with right-handed neutrinos.

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