Felea D, Mamuzic J, Masełek R, Mavromatos N E, Mitsou V A, Pinfold J L, de Austri R Ruiz, Sakurai K, Santra A, Vives O
1Institute of Space Science, P.O. Box MG 23, 077125 Bucharest, Măgurele Romania.
2Instituto de Física Corpuscular (IFIC), CSIC-Universitat de València, C/Catedrático José Beltrán 2, 46980 Paterna, Valencia Spain.
Eur Phys J C Part Fields. 2020;80(5):431. doi: 10.1140/epjc/s10052-020-7994-7. Epub 2020 May 17.
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.
我们展示了一项关于利用大型强子对撞机(LHC)上的MoEDAL实验寻找长寿命超对称伙伴可能性的研究。MoEDAL对诸如磁单极子或大质量(亚)稳定带电粒子等高度电离的物体敏感。我们专注于在一个现象学上现实的模型中直接探测长寿命 sleptons 的前景,该模型在衰变链中涉及一个中间中性长寿命粒子。这种情况尚未被来自ATLAS或CMS的当前数据排除,并且与天体物理约束兼容。使用蒙特卡罗模拟,我们比较了在MoEDAL由于更宽松的选择标准以及几乎没有背景而能够提供与ATLAS和CMS互补的发现范围的情况下,MoEDAL与ATLAS的灵敏度。还值得指出的是,在这种带电staus是主要长寿命候选者的情况下,MoEDAL的相关质量范围与超对称在为ANITA探测器观测到的异常事件提供解释方面的潜在作用兼容。