First Constraints on the Complete Neutrino Mixing Matrix with a Sterile Neutrino

被引:51
作者
Collin, G. H. [1 ]
Arguelles, C. A. [1 ]
Conrad, J. M. [1 ]
Shaevitz, M. H. [2 ]
机构
[1] MIT, 77 Massachusetts Ave, Cambridge, MA 02139 USA
[2] Columbia Univ, New York, NY 10027 USA
基金
美国国家科学基金会;
关键词
OSCILLATIONS; SEARCH; SCALE;
D O I
10.1103/PhysRevLett.117.221801
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
Neutrino oscillation models involving one extra mass eigenstate beyond the standard three (3 + 1) are fit to global short baseline experimental data and the recent IceCube nu(mu) + (nu) over bar (mu) disappearance search result. We find a best fit of Delta m(41)(2) = 1.75eV(2) with Delta chi(2)(null-min)/d.o.f: of 50.61/4. We find that the combined IceCube and short baseline data constrain theta(34) to < 80 degrees(< 6 degrees) at 90% C. L. for Delta m(41)(2) approximate to 2(6) eV(2), which is improved over present limits. Incorporating the IceCube information provides the first constraints on all entries of the 3+1 mixing matrix.
引用
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页数:6
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