标题： 轻子味违反：直线对撞机的物理潜力 显示英文标题

标题： Lepton flavour violation: physics potential of a Linear Collider

摘要： 我们重新审视直线对撞机在研究轻子味违反方面的潜力，考虑到新的LHC限制以及轻子物理领域的（非常）近期发展。 在I型超对称跷跷板框架内，我们评估了观察由e+ e-和e- e-碰撞产生的跷跷板诱导的轻子味违反末态e \mu + 缺失能量的可能性。 在两种情况下，我们都考虑了标准模型和超对称带电电流的潜在背景。 我们还探讨了电子和正电子束极化的可能性。 即使在没有动量学和/或探测器截断的情况下，信号的统计显著性使得在参数空间的很大区域内观察这种味违反事件成为可能。 我们进一步考虑了在e- e-束选项中的\mu -\mu - + E^T_miss末态，发现由于背景非常被抑制，该过程被证明是超对称跷跷板的真正清晰探针，假设后者是轻子味违反的唯一来源。 显示英文摘要

摘要： We revisit the potential of a Linear Collider concerning the study of lepton flavour violation, in view of new LHC bounds and of the (very) recent developments in lepton physics. Working in the framework of a type I supersymmetric seesaw, we evaluate the prospects of observing seesaw-induced lepton flavour violating final states of the type e \mu + missing energy, arising from e+ e- and e- e- collisions. In both cases we address the potential background from standard model and supersymmetric charged currents. We also explore the possibility of electron and positron beam polarisation. The statistical significance of the signal, even in the absence of kinematical and/or detector cuts, renders the observation of such flavour violating events feasible over large regions of the parameter space. We further consider the \mu-\mu- + E^T_miss final state in the e- e- beam option finding that, due to a very suppressed background, this process turns out to be a truly clear probe of a supersymmetric seesaw, assuming the latter to be the unique source of lepton flavour violation.