Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
1998-03-30
Phys.Rev. D58 (1998) 055008
Physics
High Energy Physics
High Energy Physics - Phenomenology
5 pages, REVTEX, 3 eps figs included
Scientific paper
10.1103/PhysRevD.58.055008
Magnetic fields mix axions with photons, allowing for the cyclotron process e -> e + a by virtue of an intermediate plasmon even if axions do not couple to electrons at tree level. The axion and longitudinal-plasmon dispersion relations always cross for a certain wave number, leading to a resonant enhancement of this process. Even then, however, it cannot quite compete with the usual nucleon processes in a supernova core. The well-known axion window 10^{-5} eV < m_a < 10^{-2} eV remains open and axions may still constitute the cosmic dark matter.
Mikheev Nickolay V.
Raffelt Georg
Vassilevskaya L. A.
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