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arXiv 2109.14898hep-phhep-ex
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用现在和未来的太阳中微子数据测试无菌中微子混合

Testing sterile neutrino mixing with present and future solar neutrino data

Kim Goldhagen, Michele Maltoni, Shayne Reichard, Thomas Schwetz

摘要:

我们研究了太阳中微子数据对质量为$\gtrsim$ eV的无菌中微子混合的敏感性。对于目前的数据,我们进行了Feldman-Reynins分析,以获得一个强大的限制无菌中微子混合。太阳中微子极限排除了与反应堆和放射性镓源实验相关的参数空间的重要区域。然后,我们研究了即将到来的太阳中微子数据的灵敏度,最显着的弹性中微子电子散射在达尔文和沙丘实验,以及相干中微子核散射在达尔文。这些高精度的测量将增加对无菌中微子混合的灵敏度,与目前的限制相比,增加了约4.5倍。作为一个副产品,我们介绍了一个简化的太阳中微子分析,只使用四个数据点:低和高能量的$ν_e$生存和过渡概率。我们表明,这种简化的分析是在一个完整的太阳中微子分析非常一致,它是非常容易处理的数值,并可以应用到任何新的物理模型中的能量依赖的$ν_e$跃迁概率没有显着修改。

英文摘要:

We investigate the sensitivity of solar neutrino data to mixing of sterile neutrinos with masses $\gtrsim$ eV. For current data, we perform a Feldman-Cousins analysis to derive a robust limit on the sterile neutrino mixing. The solar neutrino limit excludes significant regions of the parameter space relevant to hints from reactor and radioactive gallium source experiments. We then study the sensitivity of upcoming solar neutrino data, most notably elastic neutrino-electron scattering in the DARWIN and DUNE experiments as well as coherent neutrino-nucleus scattering in DARWIN. These high precision measurements will increase the sensitivity to sterile neutrino mixing by about a factor of 4.5 compared to present limits. As a by-product, we introduce a simplified solar neutrino analysis using only four data points: the low- and high-energy $ν_e$ survival and transition probabilities. We show that this simplified analysis is in excellent agreement with a full solar neutrino analysis; it is very easy to handle numerically and can be applied to any new physics model in which the energy dependence of the $ν_e$ transition probabilities is not significantly modified.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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