Astrophysical implications of the induced neutrino magnetic moment from large extra dimensions |
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Authors: | G. C. McLaughlin and J. N. Ng |
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Affiliation: | TRIUMF, 4004 Wesbrook Mall, Vancouver, BC V6T 2A3, Canada |
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Abstract: | Theories involving extra dimensions, a low (TeV) string scale and bulk singlet neutrinos will produce an effective neutrino magnetic moment which may be large (10−11μB). The effective magnetic moment increases with neutrino energy, and therefore high energy reactions are most useful for limiting the allowed number of extra dimensions. We examine constraints from both neutrino-electron scattering and also astrophysical environments. We find that supernova energy loss considerations require a number of extra dimensions, n≥2, for an electron neutrino-bulk neutrino Yukawa coupling of order 1. |
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