The Standard Model is a successful theory but lack of a mechanism for neutrino mass generation as well as a solution to the naturalness problem. In the models that are proposed to simultaneously solve the two problems, heavy Majorana neutrinos and top partners are usually predicted that can lead to a new decay mode of the top partner mediated by the heavy Majorana neutrinos: $T\to b\,W^{+}\to b\,\ell^{+}\ell^{+}q\bar{q'}$. In this paper, we will study the observability of such a new signature via the pair production process of top partner $pp \to T\bar{T} \to 2b+ \ell^\pm \ell^\pm+4j$ in a model independent way. By performing Monte-Carlo simulation, we present the $2\sigma$ exclusion limits of the top partner mass and mixing parameters at the HL-LHC.

中文翻译：

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从 LHC 的同符号双轻子事件中探索类矢量的顶级伙伴

标准模型是一个成功的理论，但缺乏产生中微子质量的机制以及自然性问题的解决方案。在提出的同时解决这两个问题的模型中，通常预测重马约拉纳中微子和顶级伙伴，这会导致由重马约拉纳中微子介导的顶级伙伴的新衰变模式：$T\to b\,W^ {+}\to b\,\ell^{+}\ell^{+}q\bar{q'}$。在本文中，我们将通过顶级合伙人 $pp \to T\bar{T} \to 2b+ \ell^\pm \ell^\pm+4j$ 的对产生过程来研究这种新签名的可观察性。模型独立的方式。通过执行蒙特卡洛模拟，我们展示了 HL-LHC 的顶级合作伙伴质量和混合参数的 $2\sigma$ 排除限制。