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arXiv · hep-ph/0611006

Self Interacting Dark Matter in the Solar System

Avijit K. Ganguly·Pankaj Jain·Subhayan Mandal·Sarah Stokes
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Abstract

Weakly coupled, almost massless, spin 0 particles have been predicted by many extensions of the standard model of particle physics. Recently, the PVLAS group observed a rotation of polarization of electromagnetic waves in vacuum in the presence of transverse magnetic field. This phenomenon is best explained by the existence of a weakly coupled light pseudoscalar particle. However, the coupling required by this experiment is much larger than the conventional astrophysical limits. Here we consider a hypothetical self-interacting pseudoscalar particle which couples weakly with visible matter. Assuming that these pseudoscalars pervade the galaxy, we show that the solar limits on the pseudoscalar-photon coupling can be evaded.

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Avijit K. Ganguly, Pankaj Jain, Subhayan Mandal, Sarah Stokes. 2007-05-09. Self Interacting Dark Matter in the Solar System. https://doi.org/10.1103/physrevd.76.025026

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