Search for Sterile Neutrinos in MINOS and MINOS+ Using a Two-Detector Fit.
Search for Sterile Neutrinos in MINOS and MINOS+ Using a Two-Detector Fit.
复制标题
DOI：
10.1103/physrevlett.122.091803
复制
发表时间：
2017-10
影响因子：
8.6
通讯作者：
P. Adamson;I. Anghel;I. Anghel;A. Aurisano;G. Barr;M. Bishai;A. Blake;A. Blake;G. Bock
中科院分区：
文献类型：
--
作者：
P. Adamson;I. Anghel;I. Anghel;A. Aurisano;G. Barr;M. Bishai;A. Blake;A. Blake;G. Bock
在1.04和735 km的基线上，利用MINOS和MINOS+组合暴露16.36×10^{20}质子在目标上，通过寻找介子中微子的消失，研究了活跃中微子和光惰性中微子之间的混合。同时拟合两个探测器中的带电μ子中微子和中性电流中微子能谱，使用3+1模型没有发现无菌中微子混合的证据。迄今为止最严格的限制是对大多数无菌中微子质量分裂值的混合参数sin^{2}θ_{24}设置Δm_{41}^{2}>10^{-4} eV^{2}。
A search for mixing between active neutrinos and light sterile neutrinos has been performed by looking for muon neutrino disappearance in two detectors at baselines of 1.04 and 735 km, using a combined MINOS and MINOS+ exposure of 16.36×10^{20} protons on target. A simultaneous fit to the charged-current muon neutrino and neutral-current neutrino energy spectra in the two detectors yields no evidence for sterile neutrino mixing using a 3+1 model. The most stringent limit to date is set on the mixing parameter sin^{2}θ_{24} for most values of the sterile neutrino mass splitting Δm_{41}^{2}>10^{-4} eV^{2}.