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arXiv 1902.08575hep-ph
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用不育中微子质量约束Majorana中微子的有效质量

Constraining the Effective Mass of Majorana Neutrino with Sterile Neutrino Mass for Inverted Ordering Spectrum

Jaydip Singh

摘要:

受中微子物理实验异常和最近短基线和另一个中微子实验的振荡数据的启发,实现一个额外的中微子味道似乎是有利的。这种额外的味道可能会改变当前数据采集和下一代$(ββ)_{0ν}$ -衰变实验的可观察$|m_{ββ}|$,该实验旨在探测并可能观察参数空间的逆序区域($|m_{ββ}| \simeq 10^{-2}$ eV)。这一观察将允许建立超越标准模型的物理学和像轻子数破坏和中微子的马约拉纳性质这样的现象。对于质谱的排序(正序和逆序),该可观察值($|m_{ββ}|$)的范围没有很好地定义。为了精确地定义三种活跃中微子态的范围,已经进行了几次尝试。为了对比这个范围,我已经与一个额外的质量状态,$ν_{4}$和它的效果与CP破坏Majorana阶段的各种组合,考虑到IO情况下的中微子振荡参数的更新数据的可观察性。基于Monte Carlo技术,使用无菌参数的第四Majorana-Dirac相位获得了一个参数区域,该参数区域导致有效质量低于0.01 eV或0.05 eV,用于计划在不久的将来实验中观察到的反向质量排序情况。

英文摘要:

Inspired by the experimental anomalies in neutrino physics and recent oscillation data from short baseline and another neutrino experiment, the realization of one extra neutrino flavor seem to be favoring. This extra flavor may change the observable, $|m_{ββ}|$ of currently data taking and next-generation $(ββ)_{0ν}$-decay experiments aim to probe and possibly look the Inverted Ordering region($|m_{ββ}| \simeq 10^{-2}$eV) of parameter space. This observation would allow establishing physics beyond the standard model and phenomena like lepton number violation and Majorana nature of neutrino. The range of this observable ($|m_{ββ}|$) is not very well defined for both the ordering of mass spectrum(Normal Ordering and Inverted Ordering). Several attempts have been made for defining exactly the range for three active neutrino states. For contrasting this range, I have worked with an extra mass states, $ν_{4}$ and its effect on the observable with various combination of CP violation Majorana phases by taking into account the updated data on the neutrino oscillation parameters for IO case. Based on the Monte Carlo technique, a parameter region is obtained using the fourth Majorana-Dirac phase of sterile parameters that lead to an effective mass below 0.01 eV or .05 eV for inverted mass ordering case which is planned to be observed in the near future experiment.

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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