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arXiv 2207.02790hep-phhep-ex
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大额外维度与中微子实验

Large Extra Dimensions and neutrino experiments

D. V. Forero, C. Giunti, C. A. Ternes, O. Tyagi

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17 pages, 7 figures
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摘要：

大额外维度的存在可以在各种中微子实验中探测到。我们分析了几个中微子的数据集在一个模型中占主导地位的大额外维。结果表明，Ga异常可以用大额外维引起的中微子振荡来解释，但Ga异常所选择的参数空间区域与反应堆速率数据以及大亚湾和MINOS的数据的边界存在张力。我们还提出了从KATRIN数据的分析得到的界限。我们证明，目前的实验可以把强界的大小$R_{\text{ED}}$额外的维：$R_{\text{ED}} < 0.20~μ\text{m}$和$R_{\text{ED}} < 0.10~μ\text{m}$在90\%C.标准中微子质量的正序和逆序。

英文摘要：

The existence of Large Extra Dimensions can be probed in various neutrino experiments. We analyze several neutrino data sets in a model with a dominant large extra dimension. We show that the Gallium anomaly can be explained with neutrino oscillations induced by the large extra dimension, but the region of parameter space which is preferred by the Gallium anomaly is in tension with the bounds from reactor rate data, as well as the data of Daya Bay and MINOS. We also present bounds obtained from the analysis of the KATRIN data. We show, that current experiments can put strong bounds on the size $R_{\text{ED}}$ of the extra dimension: $R_{\text{ED}} < 0.20~μ\text{m}$ and $R_{\text{ED}} < 0.10~μ\text{m}$ at 90\% C.L. for normal and inverted ordering of the standard neutrino masses, respectively.

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