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arXiv · hep-ph/0504134

How Magnetic is the Dirac Neutrino?

Nicole F. Bell·Vincenzo Cirigliano·Michael J. Ramsey-Musolf·Petr Vogel·Mark B. Wise
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Abstract

We derive model-independent, "naturalness" upper bounds on the magnetic moments μ_νof Dirac neutrinos generated by physics above the scale of electroweak symmetry breaking. In the absence of fine-tuning of effective operator coefficients, we find that current information on neutrino mass implies that |μ_ν| < 10^(-14) Bohr magnetons. This bound is several orders of magnitude stronger than those obtained from analyses of solar and reactor neutrino data and astrophysical observations.

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Nicole F. Bell, Vincenzo Cirigliano, Michael J. Ramsey-Musolf, Petr Vogel, Mark B. Wise. 2005-12-16. How Magnetic is the Dirac Neutrino?. https://doi.org/10.1103/physrevlett.95.151802

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