Pseudoscalar Conversion and X-rays from the Sun

Details Pseudoscalar Conversion and X-rays from the Sun Pseudoscalar Conversion and X-rays from the Sun

1995-07-19

arxiv.org/abs/hep-ph/9507345v1

Phys.Lett. B365 (1996) 193

Physics

High Energy Physics

High Energy Physics - Phenomenology

15 pages, RevTex file. Figures available upon request to Carlson@physics.harvard.edu. (please include full mailing address in

Scientific paper

10.1016/0370-2693(95)01250-8

We investigate the detection of a pseudoscalar $\phi$ that couples electromagnetically via an interaction ${1\over4}g \phi F {\tilde F}$. In particular, we focus on the conversion of pseudoscalars produced in the sun's interior in the presence of the sun's external magnetic dipole field and sunspot-related magnetic fields. We find that the sunspot approach is superior. Measurements by the SXT on the Yohkoh satellite can measure the coupling constant down to $g=0.5$--$1 \times 10^{-10}\,\rm GeV^{-1}$, provided the pseudoscalar mass $m < 7{\times} 10^{-6}\,$eV, which makes it competitive with other astrophysical approaches.

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