Search for CP Violation and Precision Measurements in Neutrino Oscillations at the T2K Experiment (Tokai to Kamioka)

在运行的头几年，T2K在中微子振荡参数的精确度方面取得了许多改进，旨在在未来几年解决以下问题：-23-混合最大值是23-混合最大值，还是-如果也就是说，m^2_23是正的还是负的？-是否与零不同？如果是，它的值是否会引起可测量的CP违例？T2K将在未来几年将数据量增加10倍，从而为回答这些令人兴奋和有趣的问题做出很大贡献。为了特别解决CP破坏的问题，计划在中微子和反中微子模式下交替运行。这将允许比较物质和反物质的行为，并可能直接揭示它们之间的差异。亚琛理工大学的T2K小组希望参与这一令人兴奋的研究计划，并在DFG的支持下进行大量投资，获得预期的科学结果。我们愿继续为ND280近距离探测器的运行和数据校准作出贡献，并就上述问题参与它们的分析。

After the first years of running yielding many improvements on the precision of the neutrino oscillation parameters, T2K aims to address in the coming years the following questions:- Is the 23-mixing maximal or does \theta_23 differ from 45°?- If \theta_23 differs from 45°, in which octant is it located?- Which mass hierarchy is realized in nature, i.e. is \Delta m^2_23 positive or negative?- Is \delta_CP different from zero and if so does its value give rise to measureable CP violation?T2K will contribute substantially to the answering of these exiting and fascinating questions by increasing the amount of data by a factor of ten in the coming years. To address especially the question of CP violation an alternate running in neutrino and anti-neutrino mode is planned. This will allow comparing the behavior of matter and anti-matter and might reveal differences between them directly.The T2K group of RWTH Aachen University wants to participate in this exciting research program and harvest the expected scientific results after the substantial investments which have been rendered possible through the support of the DFG. We would like to continue our contributions to the operation of the ND280 near detector and to the calibration of its data and to take part in their analysis with respect to the questions given above.