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arXiv 1104.4945hep-phhep-ex
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寻找早期LHC的反常顶夸克产生

Search for anomalous top quark production at the early LHC

Jun Gao, Chong Sheng Li, Li Lin Yang, Hao Zhang

摘要:

我们提出了一个详细的研究异常顶夸克的生产与随后的衰变在LHC引起的模型无关的口味改变中性流耦合,将完整的次主导阶QCD效应。我们的结果表明,考虑到Tevatron的电流限制,LHC与$\sqrt{s}=7$ TeV可能会发现异常耦合在5 $σ$水平为61 pb $^{-1}$的一个非常低的积分亮度。在大型强子对撞机的异常耦合的发现潜力进行了详细的检查。我们还讨论了使用电荷比来区分$tug$和$tcg$耦合的可能性。

英文摘要:

We present a detailed study of the anomalous top quark production with subsequent decay at the LHC induced by model-independent flavor-changing neutral-current couplings, incorporating the complete next-to-leading order QCD effects. Our results show that, taking into account the current limits from the Tevatron, the LHC with $\sqrt{s}=7$ TeV may discover the anomalous coupling at 5$σ$ level for a very low integrated luminosity of 61 pb$^{-1}$. The discovery potentials for the anomalous couplings at the LHC are examined in detail. We also discuss the possibility of using the charge ratio to distinguish the $tug$ and $tcg$ couplings.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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