Heavy Majorana Neutrinos in the Effective Lagrangian Description: Application to Hadron Colliders
Heavy Majorana Neutrinos in the Effective Lagrangian Description: Application to Hadron Colliders
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DOI：
10.1016/j.physletb.2008.11.031
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发表时间：
2008-06
影响因子：
4.4
通讯作者：
F. Águila;S. Bar-Shalom;A. Soni;J. Wudka
中科院分区：
文献类型：
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作者：
F. Águila;S. Bar-Shalom;A. Soni;J. Wudka
我们认为，重马约拉纳中微子N与子TeV质量的影响，并认为，仅仅观察这些粒子将是一个信号的物理超越最小的跷跷板机制。我们描述了N的相互作用，使用一个有效的拉格朗日，并展示了完整的一套有效的运营商的维数为106，涉及N和标准模型领域。我们认为，这些相互作用可以相对容易地跟踪在高能对撞机。例如，我们发现，如果mN超过600 GeV，在TeV尺度上的新物理（超过N）可以在LHC中产生数千个特征性的同号轻子数违反π + π +jj事件（j =光喷流），这也可以具有独特的前后不对称信号;如果mN超过300 GeV，甚至Tevatron也有很好的前景。
We consider the effects of heavy Majorana neutrinos N with sub-TeV masses and argue that the mere observation of these particles would be a signal of physics beyond the minimal seesaw mechanism. We describe the N interactions using an effective Lagrangian and exhibit the complete set of effective operators of dimension ⩽6 involving the N and Standard Model fields. We argue that these interactions can be relatively easy to track at high-energy colliders. For example, we find that new physics (beyond the N) at the TeV-scale can yield thousands of characteristic same-sign lepton number violating ℓ+ℓ+jj events (j = light jet) at the LHC if mN≲600 GeV, which can also have a distinctive forward-backward asymmetry signal; even the Tevatron has good prospects for this signature if mN≲300 GeV.