标题： 在ATLAS探测器中，于$\sqrt{s}=8$TeV的$pp$碰撞中搜索衰变为$eμ$、$eτ$或$μτ$的重性中性粒子 显示英文标题

标题： Search for a Heavy Neutral Particle Decaying to $eμ$, $eτ$, or $μτ$ in $pp$ Collisions at $\sqrt{s}=8$ TeV with the ATLAS Detector

摘要： 这封信件介绍了一种对一个重的中性粒子的搜索，该粒子衰变为相反电荷的不同味轻子对，$e^\pm \mu^\mp$，$e^\pm \tau^\mp$或$\mu^\pm \tau^\mp$，使用ATLAS探测器在LHC上收集的20.3 fb$^{-1}$的$pp$碰撞数据，能量为$\sqrt{s} = 8$TeV。 观察到的候选事件数量与标准模型预期相一致。 在两种情况下对新现象的截面设置了限制：在$R$-宇称破坏的超对称模型中产生$\tilde{\nu}_{\tau}$，以及产生轻子味破坏的$Z'$矢量玻色子。 显示英文摘要

摘要： This Letter presents a search for a heavy neutral particle decaying into an opposite-sign different-flavor dilepton pair, $e^\pm \mu^\mp$, $e^\pm \tau^\mp$, or $\mu^\pm \tau^\mp$ using 20.3 fb$^{-1}$ of $pp$ collision data at $\sqrt{s} = 8$ TeV collected by the ATLAS detector at the LHC. The numbers of observed candidate events are compatible with the Standard Model expectations. Limits are set on the cross section of new phenomena in two scenarios: the production of $\tilde{\nu}_{\tau}$ in $R$-parity-violating supersymmetric models and the production of a lepton-flavor-violating $Z'$ vector boson.