Heavy neutrinos: the heterodox strikes back

Details Heavy neutrinos: the heterodox strikes back Heavy neutrinos: the heterodox strikes back

Jan 1991

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991phlb..253..173s&link_type=abstract

Physics Letters B, Volume 253, Issue 1-2, p. 173-180.

Physics

5

Scientific paper

The properties of a fourth generation doublet neutrino are severely constrained by the recent LEP results. This species is no longer a viable candidate for the dark for the dark matter pervades the universe. Those who favour the heterodox will be relieved to notice that neutrinos embedded inside electroweak gauge triplets - a promising if unconventional possibility - may still solve the astronomical missing mass conundrum. High energy physics and cosmological relevance favour such a neutrino to have a mass in the range 30-80 GeV. Whilst elusively absent from the Z0 boson peak width, these new dark matter candidates are associated by gauge symmetry to charged Dirac fermions whose discovery should not escape the LEP detectors once the beam energy reaches ~ 100 GeV.
On leave of absence from LAPP, BP 110, F-74941 Annecy-le-Vieux Cedex, France and Université de Chambéry, F-73000 Chambéry, France.

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