Fermilab, Theoretical Physics Department, P.O. Box 500, Batavia, Illinois 60510, USA.
Phys Rev Lett. 2011 Aug 26;107(9):091801. doi: 10.1103/PhysRevLett.107.091801. Epub 2011 Aug 23.
New predictions for the antineutrino flux from nuclear reactors suggest that reactor experiments may have measured a deficit in this flux, which can be interpreted in terms of oscillations between the known active neutrinos and new sterile states. We perform a reanalysis of global short-baseline neutrino oscillation data in a framework with one or two sterile neutrinos. While one sterile neutrino is still not sufficient to reconcile the signals suggested by reactor experiments and by the LSND and MiniBooNE experiments with null results from other searches, we find that, with the new reactor flux prediction, the global fit improves considerably when two sterile neutrinos are introduced.
新的核反应堆反中微子通量预测表明,反应堆实验可能已经测量到该通量的不足,这可以用已知活性中微子与新的惰性状态之间的振荡来解释。我们在一个具有一个或两个惰性中微子的框架中对全球短基线中微子振荡数据进行了重新分析。虽然一个惰性中微子仍然不足以调和反应堆实验以及 LSND 和 MiniBooNE 实验的信号与其他搜索的零结果,但我们发现,随着新的反应堆通量预测,当引入两个惰性中微子时,全球拟合会有显著改善。