Moreover , if axions exist , scatterings with other particles in the thermal bath of the early universe unavoidably produce a population of hot axions .
High mass axions of the kind searched for by Jain and Singh ( 2007 ) would not persist in the modern universe .
If axions exist , scatterings with other particles in the thermal bath of the early universe unavoidably produce a population of hot axions .
High mass axions of the kind searched for by Jain and Singh ( 2007 ) would not persist in the modern universe .