Dark Neutrino Portal to Explain MiniBooNE Excess.
Dark Neutrino Portal to Explain MiniBooNE Excess.
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DOI：
10.1103/physrevlett.121.241801
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发表时间：
2018-07
影响因子：
8.6
通讯作者：
E. Bertuzzo;S. Jana;P. Machado;R. Zukanovich Funchal
中科院分区：
文献类型：
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作者：
E. Bertuzzo;S. Jana;P. Machado;R. Zukanovich Funchal
我们提出了一个新的框架，提供了一个解释的MiniBooNE实验在费米实验室长期过剩的类电子事件。我们提出了一个新的暗扇区包含一个暗中微子和一个暗规范玻色子，两者的质量都在几十到几百兆电子伏之间。暗中微子是通过中微子-原子核散射产生的，然后衰变为暗规范玻色子，这反过来又产生了类电子事件。这种机制提供了一个很好的适合MiniBooNE能谱和角分布。
We present a novel framework that provides an explanation to the long-standing excess of electronlike events in the MiniBooNE experiment at Fermilab. We suggest a new dark sector containing a dark neutrino and a dark gauge boson, both with masses between a few tens and a few hundreds of MeV. Dark neutrinos are produced via neutrino-nucleus scattering, followed by their decay to the dark gauge boson, which in turn gives rise to electronlike events. This mechanism provides an excellent fit to MiniBooNE energy spectra and angular distributions.