Constraints on unstable heavy neutrinos from cosmology

Vasanthi, M. M. ; Padmanabhan, T. (1986) Constraints on unstable heavy neutrinos from cosmology Journal of Astrophysics and Astronomy, 7 (2). pp. 59-70. ISSN 0250-6335

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Cosmological scenarios with massive unstable neutrinos are discussed. Restrictions on the mass and the lifetime of the unstable neutrino are derived from (a) age and mass density of the universe and (b) the growth of primordial fluctuations. It will not be possible to accommodate unstable neutrinos with masses above ∼ 1 ke V in standard cosmology unless they have exceedingly small lifetime: Τ <5 × 108s.

Item Type:Article
Source:Copyright of this article belongs to Indian Academy of Sciences.
Keywords:Neutrino; Unstable-Cosmology
ID Code:72395
Deposited On:29 Nov 2011 05:15
Last Modified:18 May 2016 17:40

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