Constraints on large extra dimensions from the MINOS experiment
Constraints on large extra dimensions from the MINOS experiment
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DOI：
10.1103/physrevd.94.111101
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发表时间：
2016-08
影响因子：
5
通讯作者：
P. Adamson;L. Mualem;L. Mualem;H. Newman;M. Orchanian;R. Patterson
中科院分区：
文献类型：
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作者：
P. Adamson;L. Mualem;L. Mualem;H. Newman;M. Orchanian;R. Patterson
我们根据 2005 年至 2012 年间 MINOS 实验收集的数据报告了对大额外维度大小的新限制。我们的分析采用了一个模型，其中惰性中微子在大额外维度中以 Kaluza-Klein 状态出现，从而改变了由于活跃中微子态和惰性中微子态之间的混合而导致的中微子振荡概率。使用费米实验室的中微子在主注入器光束照射目标上的 10.56×10^(20) 质子，我们结合了来自近端和远端探测器的 μ 子中微子带电电流和中性电流数据集，没有观察到与标准三味中微子振荡有偏差的证据。两个探测器中重建能谱的比率将大额外维度的尺寸限制为小于 0.45 μmat 90% C.L.在消失的最轻活性中微子质量的极限内。对于非零质量可以获得更强的限制。
We report new constraints on the size of large extra dimensions from data collected by the MINOS experiment between 2005 and 2012. Our analysis employs a model in which sterile neutrinos arise as Kaluza-Klein states in large extra dimensions and thus modify the neutrino oscillation probabilities due to mixing between active and sterile neutrino states. Using Fermilab’s Neutrinos at the Main Injector beam exposure of 10.56×10^(20) protons on target, we combine muon neutrino charged current and neutral current data sets from the Near and Far Detectors and observe no evidence for deviations from standard three-flavor neutrino oscillations. The ratios of reconstructed energy spectra in the two detectors constrain the size of large extra dimensions to be smaller than 0.45 μmat 90% C.L. in the limit of a vanishing lightest active neutrino mass. Stronger limits are obtained for nonvanishing masses.