Search for active neutrino disappearance using neutral-current interactions in the MINOS long-baseline experiment.
Search for active neutrino disappearance using neutral-current interactions in the MINOS long-baseline experiment.
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在 MINOS 长基线实验中利用中性流相互作用寻找活跃中微子消失。
DOI：
10.1103/physrevlett.101.221804
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发表时间：
2008
影响因子：
8.6
通讯作者：
Adamson P
中科院分区：
文献类型：
--
作者：
Adamson P
我们报告的第一个详细的比较率和光谱的中性流中微子相互作用在两个相距甚远的位置。在远点的速率衰减表明粒子与无菌粒子的混合.在重建的能谱中没有观察到异常耗尽。假设振荡发生在一个单一的质量平方分裂，一个适合的中性和带电电流的能谱限制的分数ofoscillating到一个无菌中微子在90%的置信水平低于0.68。一个不太严格的限制，由于可能的贡献，测量的中性电流事件率在遥远的网站在目前的实验极限的mapperception。
We report the first detailed comparisons of the rates and spectra of neutral-current neutrino interactions at two widely separated locations. A depletion in the rate at the far site would indicate mixing betweenand a sterile particle. No anomalous depletion in the reconstructed energy spectrum is observed. Assuming oscillations occur at a single mass-squared splitting, a fit to the neutral- and charged-current energy spectra limits the fraction ofoscillating to a sterile neutrino to be below 0.68 at 90% confidence level. A less stringent limit due to a possible contribution to the measured neutral-current event rate at the far site fromappearance at the current experimental limit is also presented.