用CMS $eejj$ & $eej$数据探测复合性
Probing Compositeness with the CMS $eejj$ & $eej$ Data
摘要：
夸克-轻子复合是一个众所周知的超标准模型（SM）假设，其中包含了轻夸克（LQ）和轻胶子（LG）等重奇异粒子，这些粒子可以同时与轻子和喷注耦合。在这封信中，我们使用最近的CMS标量LQ搜索数据中的$eejj$和$eej$通道探测这种情况。我们重铸的SM电子（或第一代自旋-1/2 LG），耦合到电子和胶子通过一个五维算符抑制的夸克-轻子复合尺度（$Λ$）的颜色八隅体的合作伙伴方面的数据。结合LHC上彩色八重态电子（$e_8$）的不同产生过程，我们利用CMS 8 TeV数据得到了$Λ$和$e_8$质量的同时束缚（$M_{e_8}$）。我们还研究了13 TeV LHC发现$e_8$的范围，并根据$M_{e_8}$和$Λ$解释了所需的光度。
英文摘要：
Quark-lepton compositeness is a well-known beyond the Standard Model (SM) scenario with heavy exotic particles like leptoquarks (LQs) and leptogluons (LGs) etc. These particles can couple to leptons and jets simultaneously. In this letter, we use the recent CMS scalar LQ search data in the $eejj$ and $eej$ channels to probe this scenario. We recast the data in terms of a color octet partner of the SM electron (or a first generation spin-1/2 LG) that couples to an electron and a gluon via a dimension five operator suppressed by the quark-lepton compositeness scale ($Λ$). By combining different production processes of the color octet electron ($e_8$) at the LHC, we use the CMS 8TeV data to obtain a simultaneous bound on $Λ$ and the mass of the $e_8$ ($M_{e_8}$). We also study the reach of the 13 TeV LHC to discover the $e_8$ and interpret the required luminosity in terms of $M_{e_8}$ and $Λ$.
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