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arXiv 1008.0169hep-ex
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Tevatron上的单顶夸克产生

Single top quark production at the Tevatron

CDF, D0 collaborations, Aran Garcia-Bellido

备注：
Presented at 45th Rencontres de Moriond: QCD and High Energy Interactions, La Thuile, Aosta Valley, Italy, 13-20 Mar 2010
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摘要：

CDF和D0合作对单个顶夸克产生的观测是Tevatron运行II的旗舰测量之一。测量了Tevatron组合单顶夸克截面：对于顶夸克质量为170~GeV的Tevatron组合单顶夸克截面为：$σ(tb+X,~tqb+X)=2.8^{+0.6}_{-0.5}$~pb。这一结果与标准模型在$\sqrt{s}$ = 1.96 TeV的$\ppbar$碰撞中产生的单个顶夸克和喷流相一致，并允许在不假设夸克族数目的情况下测量CKM矩阵元$|V_{tb}|$.其他涉及τ轻子的分析已经完成，并且测量了一些性质，如顶夸克宽度或极化。

英文摘要：

The observation of single top quark production by the CDF and D0 collaborations is one of the flagship measurements of the Run II of the Tevatron. The Tevatron combined single top quark cross section is measured to be: $σ(tb+X,~tqb+X)=2.8^{+0.6}_{-0.5}$~pb for a top quark mass of 170~GeV. This result is in agreement with the standard model production of a single top quark together with a jet in $\ppbar$ collisions at $\sqrt{s}$=1.96~TeV and allows to measure the CKM matrix element $|V_{tb}|$ without assumptions about the number of quark families. Other analyses involving tau leptons have been performed, and several properties, like the top quark width or the polarization have been measured.

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