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Signs of new physics in top quark pair production associated with a neutrino pair at the LHC

机译:顶级夸克对生产中新物理的迹象与LHC的中微子对相关

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In this paper, we examine the interactions of top quarks with the Z boson using the top quark pair production associated with the neutrino pair ( t t ˉ ν l ν l ˉ ) at the LHC. In particular, potential constraints on the anomalous electroweak top quark interactions are determined by considering two opposite-sign charged leptons, missing energy, and two b-tagged jets in the final state. The analysis is performed for a high luminosity scenario of the LHC with an integrated luminosity of 3 ? ? ab ? 1 of proton-proton collisions at a center-of-mass energy of 14?TeV. The 95% confidence intervals are computed on the anomalous couplings considering a realistic detector simulation of an upgraded CMS detector including an average of 200 proton-proton interactions per bunch crossing. We find that the t t ˉ ν l ν l ˉ channel can provide stringent bounds on the relevant Wilson coefficients and has the potential to serve as an additional handle beside the t t ˉ Z ( Z → l + l ? ) and other channels to search for new physics.
机译:在本文中,我们考察与Z玻色子顶夸克的使用与所述中微子对相关联的顶夸克对产量(吨吨ˉν升ν升ˉ)在LHC的相互作用。特别地,通过在最终状态下考虑两个相反的带来的电荷,缺失的能量和两个B标记的喷气子来确定对异常的电挖掘顶夸克相互作用的潜在约束。对LHC的高亮度场景进行了分析,其中综合发光度为3?还AB?质子 - 质子的1个质量碰撞,其中心能量为14℃。考虑到升级的CMS检测器的现实检测器模拟,包括平均每束交叉的平均200个质子 - 质子相互作用,将95%的置信区间计算在不正常的耦合上。我们发现TTˉνLνlˉnive频道可以在相关的Wilson系数上提供严格的界限,并且有可能用作TTˉZ(z→l + l?)和其他频道旁边的附加句柄新物理学。

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