论文标题
在LHC中测量稀有$ W $衰减中的CP违规行为
Measuring CP violation in rare $W$ decays at the LHC
论文作者
论文摘要
超越标准模型的重型主要中微子可以同时解释我们宇宙中微小中微子肿块和物质抗物反应的起源。沉重的主要中微子的存在也将导致Lepton数字违规，而罕见的Lepton-number-violating $ w $衰减也是可能的。有了来自两个不同的主要中微子的贡献，可以从$ W $衰减与其CP偶联过程之间的速率差异产生非零的CP不对称。本文的目的是调查通过LHC的Majoraana Neutminos在极少数$ W $衰减中测量CP违规的前景。我们的计算表明，诱导的CP不对称性独立于MajoraNA中微子质量，$ 10〜 \ rm GEV <m_n <70〜 \ rm GEV $。这样的CP不对称如果观察到，反过来将为超出标准模型以外的新物理学提供明确的证据。
Heavy Majorana neutrinos beyond the standard model can simultaneously explain the origin of tiny neutrino masses and matter-antimatter asymmetry in our Universe. The existence of heavy Majorana neutrinos will also lead to lepton number violation and the rare lepton-number-violating $W$ decays are possible. With contributions from two different Majorana neutrinos, a nonzero CP asymmetry may be generated from the rate difference between $W$ decay and its CP-conjugate process. The aim of this paper is to investigate the prospects for measuring CP violation in rare $W$ decays via Majorana neutrinos at the LHC. Our calculations show that the induced CP asymmetry is independent of the Majorana neutrino mass for $10~ \rm GeV < m_N < 70 ~\rm GeV$. Such a CP asymmetry if observed, would in turn provide unambiguous evidence of new physics beyond the standard model.
