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arXiv 1201.2660hep-ex
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顶部微分截面测量(Tevatron)

Top differential cross section measurements (Tevatron)

Andreas W. Jung

摘要:

本文给出了在费米实验室Tevatron对撞机上测量的顶夸克扇形的微分截面。CDF使用2.7 fb $^{-1}$数据,并测量微分截面作为$t\bar{t}$系统不变质量的函数。测量结果与标准模型吻合较好,并进一步用于导出Randall-Sundrum模型中衰变为顶夸克的引力子的比率$κ/M_{Pl}$的极限。D 0用1.0 fb$^{-1}的数据来测量微分截面作为顶夸克横动量的函数。测量结果与高阶微扰QCD预言和基于各种Monte-Carlo发生器的预言符合得很好。

英文摘要:

Differential cross sections in the top quark sector measured at the Fermilab Tevatron collider are presented. CDF used 2.7 fb$^{-1}$ of data and measured the differential cross section as a function of the invariant mass of the $t\bar{t}$ system. The measurement shows good agreement with the standard model and furthermore is used to derive limits on the ratio $κ/M_{Pl}$ for gravitons which decay to top quarks in the Randall-Sundrum model. D0 used 1.0 fb$^{-1} of data to measure the differential cross section as a function of the transverse momentum of the top quark. The measurement shows a good agreement to the higher order perturbative QCD prediction and various predictions based on various Monte-Carlo generators.

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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