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arXiv 1603.09031hep-phhep-ex
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用$ν_μ\to ν_τ$表观和非标准相互作用确定质量等级

Determination of mass hierarchy with $ν_μ\to ν_τ$ appearance and the effect of nonstandard interactions

Ahmed Rashed, Alakabha Datta

摘要:

中微子物理学的关键发展是确定质量等级(MH)和测量轻子扇区的CP相位。跃迁概率$P(ν_μ\rightarrow ν_τ)$和$P(\barν_μ\rightarrow \barν_τ)$的模式对这些振荡参数是敏感的。不对称参数可以定义为这两个概率的差归一化到它们的和。的配置文件的不对称参数给出了一个明确的信号的质量排序,因为它被发现是积极的倒置的层次和负的正常层次。非对称性参数对CP相位也很敏感。我们考虑了非标准中微子相互作用(NSI)对确定质量等级的影响。由于我们假设最大的新物理效应只涉及$τ$扇区,因此我们忽略了生产中的NSI,并研究了检测中的NSI效应以及传播。我们发现,NSI效应可以显着修改的预测的不对称参数,但MH仍然可以解决。

英文摘要:

Crucial developments in neutrino physics would be the determination of the mass hierarchy (MH) and measurement of the CP phase in the leptonic sector. The patterns of the transition probabilities $P(ν_μ\rightarrow ν_τ)$ and $P(\barν_μ\rightarrow \barν_τ)$ are sensitive to these oscillation parameters. An asymmetry parameter can be defined as the difference of these two probabilities normalized to their sum. The profile of the asymmetry parameter gives a clear signal of the mass ordering as it is found to be positive for inverted hierarchy and negative for normal hierarchy. The asymmetry parameter is also sensitive to the CP phase. We consider the effects of non-standard neutrino interactions (NSI) on the determination of the mass hierarchy. Since we assume the largest new physics effects involve the $τ$ sector only, we ignore NSI in production and study the NSI effects in detection as well as along propagation. We find that the NSI effects can significantly modify the prediction of the asymmetry parameter though the MH can still be resolved.

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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