Measurement of the jet fragmentation function and transverse profile in proton-proton collisions at a center-of-mass energy of 7 TeV with the ATLAS detector
Measurement of the jet fragmentation function and transverse profile in proton-proton collisions at a center-of-mass energy of 7 TeV with the ATLAS detector
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DOI：
10.1140/epjc/s10052-011-1795-y
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发表时间：
2011-11-01
影响因子：
4.4
通讯作者：
Zwalinski, L.
中科院分区：
文献类型：
--
作者：
Aad, G.;Abbott, B.;Zwalinski, L.
25 GeV < p（Tjet）< 500 GeV的射流的射流破碎函数和横向轮廓，|eta（喷气）|给出了质心能量为7 TeV的质子-质子碰撞中产生的< 1.2.使用具有36 pb（-1）的积分光度的数据进行测量。喷流的重建和他们的动量测量使用量热信息。带电粒子成分的动量使用跟踪系统测量。检测器效应校正的分布进行了比较与各种蒙特卡罗事件发生器和发生器的曲调。这些选择中的几个显示出与测量的碎裂函数良好的一致性。这些选择都不能在整个测量运动学范围内再现横向剖面和碎裂函数。
The jet fragmentation function and transverse profile for jets with 25 GeV < p(Tjet) < 500 GeV and |eta(jet)| < 1.2 produced in proton-proton collisions with a center-of-mass energy of 7 TeV are presented. The measurement is performed using data with an integrated luminosity of 36 pb(-1). Jets are reconstructed and their momentum measured using calorimetric information. The momenta of the charged particle constituents are measured using the tracking system. The distributions corrected for detector effects are compared with various Monte Carlo event generators and generator tunes. Several of these choices show good agreement with the measured fragmentation function. None of these choices reproduce both the transverse profile and fragmentation function over the full kinematic range of the measurement.