Sterile neutrinos as the warm dark matter in the type II seesaw model

Journal Article · Fri Feb 01 00:00:00 EST 2008 · Physical Review. D, Particles Fields

DOI:https://doi.org/10.1103/PHYSREVD.77.033005· OSTI ID:21039014

Wanlei, Guo ^[1]

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1. Kavli Institute for Theoretical Physics China, Institute of Theoretical Physics, Chinese Academy of Science, Beijing 100080 (China)

In the framework of type II seesaw mechanism we discuss the number of sterile right-handed Majorana neutrinos being the warm dark matter (WDM). When the type II seesaw mass term M{sub {nu}}{sup II} is far less than the type I seesaw mass term M{sub {nu}}{sup I}, only one of three sterile neutrinos may be the WDM particle. On the contrary, the WDM particles may contain all sterile neutrinos. If M{sub {nu}}{sup II}{approx}M{sub {nu}}{sup I}, the allowed number is not more than N-1 for N sterile neutrinos. It is worthwhile to stress that three different types of neutrino mass spectrum are permitted when M{sub {nu}}{sup II}>>M{sub {nu}}{sup I} and M{sub {nu}}{sup II}{approx}M{sub {nu}}{sup I}.

• OSTI ID: 21039014
• Journal Information: Physical Review. D, Particles Fields, Vol. 77, Issue 3; Other Information: DOI: 10.1103/PhysRevD.77.033005; (c) 2008 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); ISSN 0556-2821
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
COSMOLOGY
MASS SPECTRA
NEUTRINOS
NONLUMINOUS MATTER
PARTICLE IDENTIFICATION
REST MASS
STRESSES