R-D(), R-K() and neutrino mass in the 2HDM-III with right-handed neutrinos
R-D(), R-K() and neutrino mass in the 2HDM-III with right-handed neutrinos
复制标题
右旋中微子 2HDM-III 中的 R-D()、R-K() 和中微子质量
DOI：
10.1007/jhep09(2018)149
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发表时间：
2018
期刊：
影响因子：
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通讯作者：
Zhang Xin
中科院分区：
文献类型：
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作者：
Li Shao Ping;Li Xin Qiang;Yang Ya Dong;Zhang Xin
鉴于III型双希格斯双重态模型（2HDM-III）具有解决异常的潜力，而解决赤字需要在该框架内的新自由度，我们在本文中考虑了一个统一的场景，其中低尺度i型跷跷板机制嵌入到2HDM-III中，以便适应和异常以及中微子质量。我们首先重新审视了这些异常，发现目前的世界平均结果可以在2σ水平上处理，而不违反分支比≤30%的界限。该情景预测了两个亚电子中微子的质量，基于一个解耦的重马约拉纳中微子和两个质量在电弱尺度附近的近简并马约拉纳中微子。对于这些异常，同样的情况下，在μ子和顶夸克的汤川耦合下，可以在C NP 9 μ=−C NP 10 μ< 0方向上产生所需的Wilson系数。
Given that the two-Higgs-doublet model of type III (2HDM-III) has the potential to address theanomalies while the resolution to thedeficits requires new degrees of freedom within this framework, we consider in this paper a unified scenario where the low-scale type-I seesaw mechanism is embedded into the 2HDM-III, so as to accommodate theandanomalies as well as the neutrino mass. We first revisit theanomalies and find that the current world-averaged results can be addressed at 2σ level without violating the bound from the branching ratio≤ 30%. The scenario predicts two sub-eV neutrino masses based on a decoupled heavy Majorana neutrino and two nearly degenerate Majorana neutrinos with mass around the electroweak scale. For theanomalies, the same scenario can generate the required Wilson coefficients in the direction C NP 9 μ=− C NP 10 μ< 0, withYukawa couplings for the muon and the top quark.