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arXiv 1702.00447astro-ph.SRhep-exhep-ph
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新的中微子物理学和太阳中微子谱的改变形状

New neutrino physics and the altered shapes of solar neutrino spectra

Ilídio Lopes

备注：
14 pages;7 figures, Phys. Rev. D
发表信息：
Phys. Rev. D 95, 015023, Published 26 January 2017
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摘要：

来自太阳核心的中微子现在被高精度地测量，基本的中微子振荡参数也被很好地确定。在这项工作中，我们估计的影响，一个新的中微子物理模型，所谓的广义Mikheyev-Smirnov-Wolfenstein（MSW）振荡机制，对一些领先的太阳中微子光谱的形状，其中一些将部分测试下一代的太阳中微子实验。在这些计算中，我们使用了高精度的标准太阳模型与日震学数据。我们发现太阳质子-质子链和碳-氮-氧循环的不同核反应的中微子谱对新中微子物理有很大的敏感性。当中微子与电子和夸克相互作用时，$HeP$和$^8B$中微子谱的形状受到的影响更大。$^{15}O$和$^{17}F$中微子光谱的形状也被修改，尽管在这些情况下影响要小得多。最后，对$PP$和$^{13}N$中微子谱形状的影响实际上可以忽略不计。

英文摘要：

Neutrinos coming from the Sun's core are now measured with a high precision, and fundamental neutrino oscillations parameters are determined with a good accuracy. In this work, we estimate the impact that a new neutrino physics model, the so-called generalized Mikheyev-Smirnov-Wolfenstein (MSW) oscillation mechanism, has on the shape of some of leading solar neutrino spectra, some of which will be partially tested by the next generation of solar neutrino experiments. In these calculations, we use a high-precision standard solar model in good agreement with helioseismology data. We found that the neutrino spectra of the different solar nuclear reactions of the proton-proton chains and carbon-nitrogen-oxygen cycle have quite distinct sensitivities to the new neutrino physics. The $HeP$ and $^8B$ neutrino spectra are the ones for which their shapes are more affected when neutrinos interact with quarks in addition to electrons. The shape of the $^{15}O$ and $^{17}F$ neutrino spectra are also modified, although in these cases the impact is much smaller. Finally, the impact in the shape of the $PP$ and $^{13}N$ neutrino spectra is practically negligible.

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