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arXiv 1010.0871hep-ex
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用ATLAS探测器研究7 TeV质心能pp碰撞中的喷流产生截面和喷流特性

Jet production cross section and jet properties in pp collisions at 7 TeV centre-of-mass energy with the ATLAS detector

Zinonas Zinonos

摘要:

首次用ATLAS探测器测量了质心能量为tTeV的质子-质子碰撞中的喷流截面。测量使用大型强子对撞机记录的17 nb-1的积分亮度。采用反kt算法识别喷流,喷流分辨率参数R=0.6。占主导地位的不确定性来自喷流的能量尺度,它被确定为在7%的中央喷流超过60 GeV的横向动量。包含单射流微分截面作为射流横向动量和速度的函数。双射流截面作为双射流质量和角度的函数。实验结果进行了比较的预期的基础上次领先阶QCD。

英文摘要:

Jet cross sections have been measured with the ATLAS detector for the first time in proton-proton collisions at center-of-mass energy of t TeV. The measurement uses an integrated luminosity of 17 nb-1 recorded at the Large Hadron Collider. The anti-kt algorithm is used to identify jets, with jet resolution parameters R=0.6. The dominant uncertainty comes from the jet energy scale, which is determined to within 7% for central jets above 60 GeV transverse momentum. Inclusive single-jet differential cross sections are presented as functions of jet transverse momentum and rapidity. Dijet cross sections are presented as functions of dijet mass and angle chi. The experimental results are compared to the expectations based on next-to-leading order QCD.

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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