Mixed dark matter in Universal Extra Dimension models with TeV scale WR and Z'

Journal of High Energy Physics (Impact Factor: 5.62). 01/2006; 12(12):067-067. DOI: 10.1088/1126-6708/2006/12/067
Source: arXiv

ABSTRACT We show that in a class of universal extra dimension (UED) models that solves both the neutrino mass and proton decay problems using low scale left-right symmetry, the dark matter of the Universe consists of an admixture of KK photon and KK right-handed neutrinos. We present a full calculation of the dark matter density in these models taking into account the co-annihilation effects due to near by states such as the scalar partner of the KK photon as well as fermion states near the right-handed KK neutrino. Using the value of the relic CDM density, we obtain upper limits on R-1 of about 400-650 GeV and MZ'

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