We present a study on the possibility of searching for long-lived supersymmetric partners with the MoEDAL experiment at the LHC. MoEDAL is sensitive to highly ionising objects such as magnetic monopoles or massive (meta)stable electrically charged particles. We focus on prospects of directly detecting long-lived sleptons in a phenomenologically realistic model which involves an intermediate neutral long-lived particle in the decay chain. This scenario is not yet excluded by the current data from ATLAS or CMS, and is compatible with astrophysical constraints. Using Monte Carlo simulation, we compare the sensitivities of MoEDAL versus ATLAS in scenarios where MoEDAL could provide discovery reach complementary to ATLAS and CMS, thanks to looser selection criteria combined with the virtual absence of background. It is also interesting to point out that, in such scenarios, in which charged staus are the main long-lived candidates, the relevant mass range for MoEDAL is compatible with a potential role of Supersymmetry in providing an explanation for the anomalous events observed by the ANITA detector.
LHC前所未有的碰撞能量开辟了一个新的发现领域。不幸的是，新物理学的迹象尚未出现。LHC的第一个专用搜索实验MoEDAL开始为LHC Run 2采集数据。MoEDAL的目的是在大型强子对撞机上利用pp和重离子碰撞来寻找新物理学的高度电离粒子化身。MoEDAL计划在运行3 -MAPP探测器（MoEDAL穿透粒子装置）-将扩展MoEDAL的物理范围，包括标准模型之外的弱相互作用和长寿命的物理信使。这将使我们能够探索一些新的物理模型，包括暗扇区模型，以补充传统LHC对撞机探测器的方式。本文重点介绍LHC运行3的最新结果和计划。
Long-Lived Sleptons at the LHC and a 100 TeV Proton Collider
我们研究了长寿命带电粒子（LLCP）搜索在当前和未来的LHC运行和在100 TeV PP对撞机的前景，使用Drell-Yan slepton对生产为例。由于动量测量对于高能粒子变得更具挑战性，我们仔细对待预期的动量分辨率。同时，100 TeV碰撞的一个新特征是探测器中高能μ子的显著能量损失。我们用它来帮助区分μ子和LLCP。我们发现，14 TeV的LHC与3 ab $^{-1}$的积分亮度可以探测LLCP slepton质量高达1.2 TeV，和100 TeV的PP对撞机与3 ab $^{-1}$可以探测LLCP slepton质量高达4 TeV，使用飞行时间测量。这些搜索将对暗物质产生惊人的影响，LHC最终测试了slepton-neutralino共同湮灭WIMP暗物质的可能性，并且LHC和未来的强子对撞机具有在超级WIMP暗物质模型中发现LLCP的强大潜力。
Chasing Long-Lived Doubly Charged Scalars at Future Lepton Colliders
SGTB Khalsa College, Delhi（德里 SGTB 卡尔萨学院）；University of Delhi, Delhi（德里大学）；Kavli IPMU (WPI), UTIAS, University of Tokyo, Kashiwa, Chiba（东京大学 Kashiwa 校区 卡弗里宇宙起源与粒子物理联合研究所（WPI））
