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arXiv 1506.05074hep-ex
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用ATLAS探测器测量顶夸克进入轻子和夸克通道的分支比

Measurement of the top quark branching ratios into channels with leptons and quarks with the ATLAS detector

ATLAS Collaboration

摘要:

本文报道了用$t \overline{t}$(顶对)事例测量顶夸克衰变为轻子和喷注的分支比。事件记录与ATLAS探测器在大型强子对撞机在pp碰撞在质心能量为7 TeV。所收集的数据样本对应于4.6 ${\mathrm{fb}}^{-1}$的积分亮度。测量的顶夸克分支比与标准模型的预测在几个百分点的测量不确定性。

英文摘要:

Measurements of the branching ratios of top quark decays into leptons and jets using events with $t \overline{t}$ (top antitop) pairs are reported. Events were recorded with the ATLAS detector at the LHC in pp collisions at a center-of-mass energy of 7 TeV. The collected data sample corresponds to an integrated luminosity of 4.6 ${\mathrm{fb}}^{-1}$. The measured top quark branching ratios agree with the Standard Model predictions within the measurement uncertainties of a few percent.

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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