奇异双玻色子$Z'$在U $μν$ SSM中的衰变
Exotic diboson $Z'$ decays in the U$μν$SSM
摘要：
在高能对撞机上寻找新的疏轻子共振态，通常会将它们的衰变模式定位为轻夸克、顶夸克或标准模型玻色子对。还可能存在其他衰减模式，产生当前搜索不敏感的签名。我们调查的性能，寻找共振衰减成两个大半径的射流的通用搜索。作为我们分析的基准，我们使用标准模型的超对称$\text{U}(1)'$扩展，即所谓的U $μν$ SSM，其中$Z'$玻色子的所有SM衰变模式都发生，加上额外的（级联）衰变成新的标量。通用搜索使用通用多管齐下的喷注标记器，并利用大半径喷注中存在的$b$夸克，同时对所有这些$Z'$衰变模式（除了轻夸克）都很敏感。对于远低于当前实验约束的耦合，这些通用搜索在运行2 LHC数据的$3σ-4σ$水平上是敏感的。
英文摘要：
Searches for new leptophobic resonances at high energy colliders usually target their decay modes into pairs of light quarks, top quarks, or standard model bosons. Additional decay modes may also be present, producing signatures to which current searches are not sensitive. We investigate the performance of generic searches that look for resonances decaying into two large-radius jets. As benchmark for our analysis we use a supersymmetric $\text{U}(1)'$ extension of the Standard Model, the so-called U$μν$SSM, where all the SM decay modes of the $Z'$ boson take place, plus additional (cascade) decays into new scalars. The generic searches use a generic multi-pronged jet tagger and take advantage of the presence of $b$ quarks in the large-radius jets, and are sensitive to all these $Z'$ decay modes (except into light quarks) at once. For couplings that are well below current experimental constraints, these generic searches are sensitive at the $3σ-4σ$ level with Run 2 LHC data.
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