Cosmological consequences of a low mass for the selectron

Details Cosmological consequences of a low mass for the selectron Cosmological consequences of a low mass for the selectron

Mar 1984

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984phlb..137..169s&link_type=abstract

Physics Letters B, Volume 137, Issue 3-4, p. 169-170.

Physics

7

Scientific paper

It has recently been suggested that the selectron may exist and have a mass ⋍ 20 GeV, and that fewer than 4 effective neutrino types may have been present at big bang nucleosynthesis. If these suggestions are confirmed, cosmological constrainst would impose a lower limit ~ 1/2 GeV on the mass of a stable photino (corresponding to their providing the critical density for the universe). If this limit is achieved photinos would also produce a potentially measurable flux of annihilation γ-rays from the disk or halo of the galaxy, if they provide the missing mass believed to exist in these regions.

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