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arXiv 1203.5340hep-ph
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用U(1)_R轻子数拟合中微子物理

Fitting Neutrino Physics with a U(1)_R Lepton Number

Enrico Bertuzzo, Claudia Frugiuele

摘要:

我们在超对称模型的背景下研究中微子物理,其中连续的R-对称性与总轻子数一致,因此一个sneutrino可以扮演下型Higgs的角色。我们表明,通过异常调解传达到可见光区的R-破缺效应可以仅通过辐射贡献再现中微子质量和混合,而不需要任何额外的自由度。特别是,一个相对较大的反应堆角度(最近观察到的大亚湾合作)可以容纳在参数空间的充足的区域。相反,如果R破缺是通过普朗克尺度的引力效应传递到可见光区的,那么就需要额外的粒子来容纳中微子数据。

英文摘要:

We study neutrino physics in the context of a supersymmetric model where a continuous R-symmetry is identified with the total Lepton Number and one sneutrino can thus play the role of the down type Higgs. We show that R-breaking effects communicated to the visible sector by Anomaly Mediation can reproduce neutrino masses and mixing solely via radiative contributions, without requiring any additional degree of freedom. In particular, a relatively large reactor angle (as recently observed by the Daya Bay collaboration) can be accommodated in ample regions of the parameter space. On the contrary, if the R-breaking is communicated to the visible sector by gravitational effects at the Planck scale, additional particles are necessary to accommodate neutrino data.

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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