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arXiv 0907.2643hep-ex
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在HERA使用H1顶点检测器测量魅力和美丽结构函数

Measurement of the Charm and Beauty Structure Functions using the H1 Vertex Detector at HERA

The H1 Collaboration

摘要:

在HERA的e-p和e+p中性流碰撞中,在光子虚量5<Q^2<2000 GeV^2和比约肯标度变量0.0002<x<0.05的运动学区域测量了包容的魅力和美丽的截面。这些数据是在2006年和2007年用H1探测器收集的,对应的积分亮度为189 pb^-1。使用由H1顶点检测器重构的变量来确定魅力和美丽事件的数量,所述变量包括轨道对主顶点的碰撞参量和次顶点的位置。测量结果与以前的数据相结合,并与QCD预测进行比较。

英文摘要:

Inclusive charm and beauty cross sections are measured in e-p and e+p neutral current collisions at HERA in the kinematic region of photon virtuality 5<Q^2<2000 GeV^2 and Bjorken scaling variable 0.0002<x<0.05. The data were collected with the H1 detector in the years 2006 and 2007 corresponding to an integrated luminosity of 189 pb^-1. The numbers of charm and beauty events are determined using variables reconstructed by the H1 vertex detector including the impact parameter of tracks to the primary vertex and the position of the secondary vertex. The measurements are combined with previous data and compared to QCD predictions.

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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