Testing neutrino magnetic moments with active galactic nuclei

被引：17
|
作者：
Enqvist, K
Keranen, P
Maalampi, J
机构：
[1] Univ Helsinki, Dept Phys, FIN-00014 Helsinki, Finland
[2] Univ Helsinki, Helsinki Inst Phys, FIN-00014 Helsinki, Finland
来源：
PHYSICS LETTERS B | 1998年 / 438卷 / 3-4期
基金：
芬兰科学院;
关键词：
active galactic nuclei; neutrino magnetic moments;
D O I：
10.1016/S0370-2693(98)00971-X
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
We propose to test the magnetic transition moments of Majorana neutrinos by comparing the fluxes of different flavours of neutrinos coming from active galactic nuclei (AGN). We show that, with reasonable assumptions about the magnetic field of the AGN, it is possible to obtain limits on nu(tau)nu(e) and nu(tau)nu(mu) transition moments which are three to five orders of magnitude better than the laboratory limits. We also point out that with certain parameter values the ratio nu(tau)/nu(e,mu), when measured from different sources, is expected to vary from zero to values somewhat higher than one, providing an unambigious signal of a magnetic transition within the AGN which cannot be explained by neutrino oscillations. (C) 1998 Elsevier Science B.V. All rights reserved.
引用
收藏
页码：295 / 300
页数：6
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