论文标题
在$ EP $ COLLIDERS上搜索带电的Lepton违规侵犯
Searching for charged lepton flavor violation at $ep$ colliders
论文作者
论文摘要
我们在有效的理论方法中研究了电子普罗顿（$ ep $）乘客对充电的Lepton风味违规（CLFV）的敏感性，考虑到通过有效的耦合到中性的高音孔或中性标量场，考虑了将电子转换为MUON或TAU的一般有效的Lagrangian。对于光子，标准模型的$ z $ boson和希格斯粒子，我们介绍了LHEC对有效运算符系数的敏感性，这些敏感性是根据在重建级别的分析中计算得出的。作为一个示例模型，在循环水平上生成这种风味变化的中性电流（FCNC）操作员，我们考虑了无菌中微子对标准模型的扩展。我们表明，LHEC已经可以探测电子超出当前实验界限的LFV转换为若子，并且可以比当前的LFV转化到TAU的LFV转换的限制高于当前限制的数量级。我们讨论了高灵敏度是可能的，因为转化后的充电轻子主要沿向后发射，从而使信号从背景有效地分离。
We investigate the sensitivity of electron-proton ($ep$) colliders for charged lepton flavor violation (cLFV) in an effective theory approach, considering a general effective Lagrangian for the conversion of an electron into a muon or a tau via the effective coupling to a neutral gauge boson or a neutral scalar field. For the photon, the $Z$ boson and the Higgs particle of the Standard Model, we present the sensitivities of the LHeC for the coefficients of the effective operators, calculated from an analysis at the reconstructed level. As an example model where such flavor changing neutral current (FCNC) operators are generated at loop level, we consider the extension of the Standard Model by sterile neutrinos. We show that the LHeC could already probe the LFV conversion of an electron into a muon beyond the current experimental bounds, and could reach more than an order of magnitude higher sensitivity than the present limits for LFV conversion of an electron into a tau. We discuss that the high sensitivities are possible because the converted charged lepton is dominantly emitted in the backward direction, enabling an efficient separation of the signal from the background.
