Enlarged Peccei-Quinn symmetry and limits from the supernova

Details Enlarged Peccei-Quinn symmetry and limits from the supernova Enlarged Peccei-Quinn symmetry and limits from the supernova

Sep 1988

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988nuphb.307..476g&link_type=abstract

Nuclear Physics B, Volume 307, Issue 3, p. 476-486.

Physics

Nuclear Physics

1

Scientific paper

We construct a model generalizing the invisible axion model of Dine, Fischler and Srednicki to three scalar doublets and two scalar singlets. By imposing two U(1) symmetries rather than the single Peccei-Quinn symmetry of the DFS model, we arrive at a physical particle spectrum containing both a light axion and a massless Goldstone boson. The axion couplings are as usual suppressed by a large VEV, which is bounded below by SN1987a emission limits and above by cosmological arguments. The VEV in the Goldstone boson couplings is bounded below by SN1987a emission and subsequent conversion into gamma rays via the galactic magnetic field, but the cosmological upper bound cannot be applied to this massless boson.

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