Dark matter and the observability of the electroweak transition

Details Dark matter and the observability of the electroweak transition Dark matter and the observability of the electroweak transition

Jul 1991

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991phlb..263..255s&link_type=abstract

Physics Letters B, Volume 263, Issue 2, p. 255-258.

Physics

1

Scientific paper

In a recent paper, Dimopoulos et al. argued that the standard calculation of the abundance of a dark matter particle would not be affected by the electroweak transition. They considered a model with a fermion whose mass arises entirely through its interaction with the Higgs boson. I consider somewhat more complicated, but much more realistic, models, in which the dark matter particle may also be a scalar, in which a more realistic range of couplings is chosen, and in which the possibility of bare mass terms is included. It is shown that for almost all of parameter space, the electroweak transition will have a negligible effect; a (barely) significant effect arises only if the particle is a scalar with a huge coupling and a bare mass term in excess of 1300 GeV.

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