The Search for Electroweakinos
The Search for Electroweakinos
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DOI：
10.1146/annurev-nucl-031020-121031
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发表时间：
2020-03
期刊：
影响因子：
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通讯作者：
A. Canepa;T. Han;Xing Wang
中科院分区：
文献类型：
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作者：
A. Canepa;T. Han;Xing Wang
本文讨论了在SU（2）L规范对称下费米子色单重态的一般理论框架，包括单重态、二重态和三重态，对应于超对称理论中的Bino、Higgsino和Wino，因其质量本征态而被统称为“电弱子”.根据它们的三个质量参数之间的关系和电弱对称性破缺后的混合，这一部门导致丰富的现象学可能在当前和不久的将来的实验。我们讨论了在对撞机上的电弱子的衰变模式及其可观察到的签名。我们回顾了现有的模型参数的界限。我们总结了目前的状态，从ATLAS和CMS实验在LHC的综合搜索。我们评论未来对撞机的前景。该理论的一个重要特征是，最轻的中性电弱子可以被识别为WIMP冷暗物质候选者。我们考虑到现有的暗物质直接探测实验的参数的界限，并讨论了在对撞机的电弱子搜索的互补性。
In this review, we consider a general theoretical framework for fermionic color-singlet states, including a singlet, a doublet and a triplet under the standard model SU(2)$_{\rm L}$ gauge symmetry, corresponding to the Bino, Higgsino and Wino in Supersymmetric theories, generically dubbed as "electroweakinos" for their mass eigenstates. Depending on the relations among their three mass parameters and the mixings after the electroweak symmetry breaking, this sector leads to rich phenomenology potentially accessible at the current and near-future experiments. We discuss the decay patterns of the electroweakinos and their observable signatures at colliders. We review the existing bounds on the model parameters. We summarize the current status for the comprehensive searches from the ATLAS and CMS experiments at the LHC. We comment on the prospects for future colliders. An important feature of the theory is that the lightest neutral electroweakino can be identified as a WIMP cold dark matter candidate. We take into account the existing bounds on the parameters from the dark matter direct detection experiments and discuss the complementarity for the electroweakino searches at colliders.