How magnetic is the Dirac neutrino?

被引：155

作者：

Bell, NF ^{[1
]}

Cirigliano, V ^{[1
]}

Ramsey-Musolf, MJ ^{[1
]}

Vogel, P ^{[1
]}

Wise, MB ^{[1
]}

机构：

[1] CALTECH, Pasadena, CA 91125 USA

来源：

PHYSICAL REVIEW LETTERS | 2005年 / 95卷 / 15期

基金：

美国国家科学基金会;

关键词：

D O I：

10.1103/PhysRevLett.95.151802

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We derive model-independent, "naturalness" upper bounds on the magnetic moments mu(nu) of 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 vertical bar mu(nu)vertical bar less than or similar to 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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