EAS Publications Series
Volume 36, 2009Dark Energy and Dark Matter: Observations, Experiments and Theories
|Page(s)||193 - 195|
|Published online||30 May 2009|
E. Pécontal, T. Buchert, Ph. Di Stefano and Y. Copin (eds)
EAS Publications Series, 36 (2009) 193-195
Fourth generation neutrinos as dark matter
Physical Research Laboratory, India
A pseudo-Dirac neutrino of mass 50–100 GeV and mass splitting of 5 GeV can be a good candidate for dark matter. The number density of such dark matter should be close the the baryon density in order to get a dark matter density Ωm ~ 0.25. Production of heavy neutrinos by electro-weak sphaleron processes can ensure that the heavy neutrino asymmetry be of the same order as the baryon asymmetry. A mass splitting of the order.
© EAS, EDP Sciences, 2009
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.