简化GGM模型中最近ATLAS $Z+E_T^{\rm miss}$过量的一致性
Consistency of the recent ATLAS $Z+E_T^{\rm miss}$ excess in a simplified GGM model
摘要：
ATLAS最近报道了轻子- $Z+E_T^{\rm miss}$通道中的$3σ$过量。这在文献中被解释为一个简化的广义规范中介模型，包含一个胶子，一个希格西诺次轻超对称粒子（NLSP）和一个引力子最轻超对称粒子（LSP）。我们测试了这一解释的一致性，以代替CMS中相应搜索的结果以及新物理学的其他大型强子对撞机搜索。由于非去耦效应，这些模型的参数空间被分成两个区域;在一个区域中，通过顶夸克产生的额外轻子是预期的，而另一个区域看到零轻子事件的大概率。在结合相关的约束条件，我们发现，这些模型不能解释ATLAS过剩。
英文摘要：
ATLAS recently reported a $3σ$ excess in a leptonic-$Z+E_T^{\rm miss}$ channel. This was interpreted in the literature in a simplified General Gauge Mediation model containing a gluino, a higgsino next-to-lightest supersymmetric particle (NLSP) and a gravitino lightest supersymmetric particle (LSP). We test the consistency of this explanation in lieu of the results of the corresponding search in CMS, and other LHC searches for New Physics. Due to non-decoupling effects from squarks the parameter space of these models is split into two regions; in one region additional leptons via top quark production is expected, while the other region sees a large probability for zero-lepton events. After combining the relevant constraints we find that these models cannot explain the ATLAS excess.
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