We discuss the Higgs phenomenology in models with a new gauge symmetry including the scenario, where three right-handed neutrinos are inevitably introduced due to the gauge anomaly cancellations. We find that the decay branching ratio of the discovered Higgs boson into a pair of new massive gauge bosons () can significantly be enhanced in the Dirac neutrino case as compared with the Majorana case for a fixed value of the new gauge coupling and the mass of under constraints from current experimental data. Because of such an enhancement, the Dirac case can indirectly be discriminated from the Majorana case via the Higgs decay.

中文翻译：

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在具有 U(1)X 规范对称性的模型中希格斯衰变增强为 Z′ 对


我们讨论具有新规范对称性的模型中的希格斯现象学，包括由于规范异常抵消而不可避免地引入三个右手中微子的情况。我们发现，与马约拉纳情况相比，在新规范耦合和质量为固定值的情况下，在狄拉克中微子情况下，已发现的希格斯玻色子变为一对新的大质量规范玻色子的衰变分支比（）可以显着增强。在当前实验数据的限制下。由于这种增强，可以通过希格斯衰变间接区分狄拉克情况和马约拉纳情况。