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arXiv 1202.4892hep-ex
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用ATLAS探测器测量sqrt(s)= 7 TeV的pp碰撞顶夸克对产生截面

Measurement of the cross section for top-quark pair production in pp collisions at sqrt(s) = 7 TeV with the ATLAS detector using final states with two high-pt leptons

ATLAS Collaboration

摘要:

本文报道了在LHC上用ATLAS探测器记录的质心能量为7 TeV的质子-质子碰撞中顶夸克对产生的截面。候选事件具有与包含两个孤立轻子、大的缺失横向动量和至少两个喷流一致的签名。使用与0.70 fb^-1的积分亮度相对应的数据样本,可以得到t-tbar产生截面sigmartbar =176 +/-5(stat)+14 -11(syst)+/-8(lum)。pb是在顶夸克质量为m_t = 172.5 GeV的假设下测量的。

英文摘要:

A measurement is reported of the production cross section of top-quark pairs in proton-proton collisions at a center-of-mass energy of 7 TeV recorded with the ATLAS detector at the LHC. Candidate events have a signature consistent with containing two isolated leptons, large missing transverse momentum, and at least two jets. Using a data sample corresponding to an integrated luminosity of 0.70 fb^-1, a t-tbar production cross section sigmattbar=176 +/-5 (stat) +14 -11 (syst) +/- 8 (lum.) pb is measured for an assumed top-quark mass of m_t = 172.5 GeV.

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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