Constraining neutrino superluminality from searches for sterile neutrino decays

被引:0
作者
Gorbunov, D. S. [1 ]
Nugaev, E. Ya [1 ]
机构
[1] Russian Acad Sci, Inst Nucl Res, Moscow 117312, Russia
基金
俄罗斯基础研究基金会;
关键词
SN1987A; BURST;
D O I
10.1016/j.physletb.2012.06.006
中图分类号
P1 [天文学];
学科分类号
0704 ;
摘要
Superluminal neutrinos are expected to lose energy due to bremsstrahlung. It is dominated by e(+)e(-) pair production if kinematically allowed. The same signature was used in searches for 3-body decays of hypothetical heavy sterile neutrinos. From the published analyses of these searches performed by CERN PS191 and CHARM experiments we set upper limits on the neutrino velocity in the energy range from 0.2 GeV to 280 GeV. Our limits are well below the neutrino velocity favored by the recent OPERA results. For energy-independent neutrino velocity the limits obtained in this Letter are stronger than those coming from ICARUS experiment and observations of Supernova SN1987a. (C) 2012 Elsevier B.V. All rights reserved.
引用
收藏
页码:255 / 257
页数:3
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