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arXiv 1504.01487hep-ph
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中微子轻子CP破坏误差的统计约束

Statistical Constraints on the Error of the Leptonic CP Violation of Neutrinos

Kai Fu, Ying Zhang

摘要:

提出了轻子CP破坏误差的一个约束条件,即相位$δ_{CP}$必须小于$π/4$,才能在$2π$循环上区分.在此约束条件下,讨论了中微子探测器的距离、束流能量和能量分辨率等参数的影响。虽然优化的探测器性能可以使偏差最小化,从而在$2π$循环上产生更大的轻子CP相位的可分辨范围,但是由于两个奇点的存在,不可能用单个探测器的统计来确定$2π$范围内的任意轻子CP相位。定义了效率因子$η$来表征$δ_{CP}$的可分辨范围。为了覆盖整个可能的$δ_{CP}$范围,提出了一个组合的效率因子$η^*$对应于多组探测参数与不同的中微子束能量和距离。还提供了各种主要实验的综合效率因子$η^*$。

英文摘要:

A constraint on the error of leptonic CP violation, which require the phase $δ_{CP}$ to be less than $π/4$ for it to be distinguishable on a $2π$ cycle, is presented. Under this constraint, the effects of neutrino detector 's distance, beam energy, and energy resolution are discussed with reference to the present values of these parameters in experiments. Although an optimized detector performances can minimize the deviation to yield a larger distinguishable range of the leptonic CP phase on a $2π$ cycle, it is not possible to determine an arbitrary leptonic CP phase in the range of $2π$ with the statistics from a single detector because of the existence of two singular points. An efficiency factor $η$ is defined to characterize the distinguishable range of $δ_{CP}$. To cover the entire possible $δ_{CP}$ range, a combined efficiency factor $η^*$ corresponding to multiple sets of detection parameters with different neutrino beam energies and distances is proposed. The combined efficiency factors $η^*$ of various major experiments are also presented.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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