利用加速器和大气中微子对 MINOS 中 νμ 消失和 νμ→νe 振荡的联合分析。
Combined analysis of νμ disappearance and νμ→νe appearance in MINOS using accelerator and atmospheric neutrinos.
机构信息
Fermi National Accelerator Laboratory, Batavia, Illinois 60510, USA.
Argonne National Laboratory, Argonne, Illinois 60439, USA and Department of Physics and Astronomy, Iowa State University, Ames, Iowa 50011 USA.
出版信息
Phys Rev Lett. 2014 May 16;112(19):191801. doi: 10.1103/PhysRevLett.112.191801. Epub 2014 May 12.
We report on a new analysis of neutrino oscillations in MINOS using the complete set of accelerator and atmospheric data. The analysis combines the ν(μ) disappearance and ν(e) appearance data using the three-flavor formalism. We measure |Δm(32)(2)| = [2.28-2.46] × 10(-3) eV(2) (68% C.L.) and sin(2)θ(23) = 0.35-0.65 (90% C.L.) in the normal hierarchy, and |Δm(32)(2)| = [2.32-2.53] × 10(-3) eV(2) (68% C.L.) and sin(2)θ(23) = 0.34-0.67 (90% C.L.) in the inverted hierarchy. The data also constrain δ(CP), the θ(23} octant degeneracy and the mass hierarchy; we disfavor 36% (11%) of this three-parameter space at 68% (90%) C.L.
我们报告了 MINOS 中中微子振荡的新分析结果，该分析使用了完整的加速器和大气数据。该分析使用三味道规模型结合了 ν(μ)消失和 ν(e)出现数据。我们在正常层次结构中测量到 |Δm(32)(2)| = [2.28-2.46] × 10(-3) eV(2) (68% C.L.) 和 sin(2)θ(23) = 0.35-0.65 (90% C.L.)，在倒转层次结构中测量到 |Δm(32)(2)| = [2.32-2.53] × 10(-3) eV(2) (68% C.L.) 和 sin(2)θ(23) = 0.34-0.67 (90% C.L.)。数据还限制了 δ(CP)、θ(23}象限简并和质量层次；我们在 68% (90%)置信水平下不赞成这个三参数空间的 36% (11%)。
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