The Higgs boson can mix with a singlet scalar that dynamically generates the Majorana mass of the right-handed neutrino N R . We show that even a tiny mixing between the Higgs boson and a ‘decoupled’ singlet scalar allows for Higgs-mediated pair production of N R without significant mixings between the active neutrinos and N R , and thus testable at colliders via a characteristic signal of two same-sign same-flavor lepton pairs, plus missing energy. We demonstrate that this search channel is mostly background- free in pp -collision and can be a highly sensitive probe of the Higgs-singlet mixing at the current and future pp colliders. Such channel provides a clean signal to discover the singlet scalar and explore the origin of neutrino masses.

中文翻译：

---

探索稀有希格斯玻色子衰变中的解耦跷跷板标量

希格斯玻色子可以与动态产生右手中微子 NR 的马约拉纳质量的单线态标量混合。我们表明，即使希格斯玻色子和“解耦”单线态标量之间的微小混合也允许希格斯介导的 NR 对产生，而活性中微子和 NR 之间没有显着混合，因此可以通过两个相同的特征信号在对撞机上进行测试-签署相同风味的轻子对，加上缺少的能量。我们证明了这个搜索通道在 pp 碰撞中大部分是无背景的，并且可以是当前和未来 pp 碰撞器中 Higgs-singlet 混合的高度敏感的探测器。这样的通道提供了一个干净的信号来发现单线标量和探索中微子质量的起源。