Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2009-06-14
Physics
High Energy Physics
High Energy Physics - Phenomenology
19 pages, 1 figure, added analysis of our results in the astrophysical extension
Scientific paper
We calculate the total cross section for the production of photons from the scattering of axions by a strong inhomogeneous magnetic field in the form of a 2D delta-function, a cylindrical step function and a 2D Gaussian distribution, which can be approximately produced by a solenoidal current. The theoretical result is used to estimate the axion-photon conversion probability which could be expected in a reasonable experimental situation. The calculated conversion probabilities for QCD inspired axions are bigger by a factor of 2.67 (for the cylindrical step function case) than those derived by applying the celebrated 1D calculation of the (inverse) coherent Primakoff effect. We also consider scattering at a resonance $E_{axion} \sim m_{axion}$, which corresponds to the scattering from a delta-function and gives the most enhanced results. Finally, we analyze the results of this work in the astrophysical extension to suggest a way in which they may be directed to a solution to some basic solar physics problems and, in particular, the coronal heating problem.
Cantatore Giovanni
Guendelman Eduardo I.
Shilon Idan
Zioutas Konstantin
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