The meV mass frontier of axion physics

Details The meV mass frontier of axion physics The meV mass frontier of axion physics

2011-10-28

arxiv.org/abs/1110.6397v1

Physics

High Energy Physics

High Energy Physics - Phenomenology

5 pages, 1 figure

Scientific paper

We explore consequences of the idea that the cooling speed of white dwarfs can be interpreted in terms of axion emission. In this case the Yukawa coupling to electrons has to be g_{ae} 10^-13, corresponding to an axion mass of a few meV. Axions then provide only a small fraction of the cosmic cold dark matter, whereas core-collapse supernovae release a large fraction of their energy in the form of axions. We estimate the diffuse supernova axion background (DSAB) in the universe, consisting of 30 MeV-range axions with a radiation density comparable to the extra-galactic background light. The DSAB would be challenging to detect. However, axions with white-dwarf inspired parameters can be accessible in a next generation axion helioscope.

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