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Majorana neutrinos as the dark matters in the cold plus hot dark matter model

descriptionPublicationkeyboard_double_arrow_right Article , Preprint , Other literature type 01 Jul 1996Embargo end date: 01 Jan 1996Publisher:Elsevier BVJournal:Physics Letters B, volume 380, pages 324-330 (issn: 0370-2693,

Authors: Shin Sasaki; Nobuchika Okada; Noriaki Kitazawa;

doi: 10.1016/0370-2693(96)00530-8 , 10.48550/arxiv.hep-ph/9602204

arXiv: http://arxiv.org/abs/hep-ph/9602204

Majorana neutrinos as the dark matters in the cold plus hot dark matter model

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Abstract

A simple model of the Majorana neutrino with the see-saw mechanism is studied, assuming that two light neutrinos are the hot dark matters with equal mass of 2.4 eV in the cold plus hot dark matter model of cosmology. We find that the heavy neutrino, which is the see-saw partner with the remaining one light neutrino, can be the cold dark matter, if the light neutrino is exactly massless. This cold dark matter neutrino is allowed to have the mass of the wide range from 5.9 x 10^2 eV to 2.2 x 10^7 eV.

14 pages, 1 Postscript figure, uses REVTEX macro

Related Organizations

University of Tokyo
Japan
Tokyo Metropolitan University
Japan

Keywords

High Energy Physics - Phenomenology, High Energy Physics - Phenomenology (hep-ph), FOS: Physical sciences

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