Joint νμ Disappearance and νe Appearance Analysis at the T2K Experiment Using a Frequentist Approach

被引：0
作者：
Escudero, L. [1 ]
机构：
[1] Inst Fis Corpuscular IFIC, C Catedrat Jose Beltran 2, E-46980 Valencia, Spain
来源：
NUCLEAR AND PARTICLE PHYSICS PROCEEDINGS | 2016年 / 273卷
关键词：
Neutrino oscillation; Muon neutrino disappearance; Electron neutrino appearance; T2K; CP violation;
D O I：
10.1016/j.nuclphysbps.2015.10.014
中图分类号：
O412 [相对论、场论]; O572.2 [粒子物理学];
学科分类号：
摘要：
The T2K long-baseline neutrino oscillation experiment has observed the disappearance of nu(mu) and the appearance of nu(e) from its nu(mu) beam. Since 2010, it has accumulated 6.57x10(20) protons on target and observed 120 nu(mu) and 28 nu(e) event candidates. With this dataset, corresponding to only similar to 8% of its goal POT, T2K has achieved world leading results: the best precision in theta(23), the strongest evidence of nu(e) appearance in a nu(mu) beam and the first hint on delta(CP). Its first joint 3-flavour oscillation analysis, combining the nu(mu) disappearance and nu(e) appearance channels, is presented in this paper using a Frequentist approach. The results of this analysis, combined with the measurements from reactor experiments, indicate that delta(CP) is consistent with -pi/2. Furthermore, the data excluded values of delta(CP)p in the interval [0.146,0.825]pi ([-0.080,1.091]pi) at the 90% CL for normal (inverted) mass hierarchy.
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页码：2636 / 2638
页数：3
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