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arXiv 1305.4192hep-ex
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用ATLAS探测器测量pp碰撞sqrt(s)=7 TeV的高质量Drell-Yan微分截面

Measurement of the high-mass Drell--Yan differential cross-section in pp collisions at sqrt(s)=7 TeV with the ATLAS detector

ATLAS Collaboration

摘要:

这封信报道了在LHC上测量的质心能量为7 TeV的质子-质子碰撞中的高质量Drell-Yan微分截面。基于4.9 /fb的积分亮度,对于电子和正电子都具有横向动量pT > 25 GeV和赝快度eta < 2.5的基准区域,用ATLAS探测器测量Z/gamma* 到e+e-通道中的微分截面,作为不变质量Mee的函数,在116 < Mee < 1500 GeV的范围内。比较各种事件发生器和微扰QCD计算的预测,在下一个到下一个到领先的顺序。

英文摘要:

This Letter reports a measurement of the high-mass Drell-Yan differential cross-section in proton-proton collisions at a centre-of-mass energy of 7 TeV at the LHC. Based on an integrated luminosity of 4.9 /fb, the differential cross-section in the Z/gamma* to e+e- channel is measured with the ATLAS detector as a function of the invariant mass, Mee, in the range 116 < Mee < 1500 GeV, for a fiducial region in which both the electron and the positron have transverse momentum pT > 25 GeV and pseudorapidity eta < 2.5. A comparison is made to various event generators and to the predictions of perturbative QCD calculations at next-to-next-to-leading order.

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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