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arXiv 1204.3170hep-ex
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sqrt(s)= 7 TeV pp碰撞中喷注的形状、横向尺寸和带电强子多重数

Shape, transverse size, and charged-hadron multiplicity of jets in pp collisions at sqrt(s) = 7 TeV

CMS Collaboration

摘要:

本文介绍了在质心能量为7 TeV的质子-质子碰撞中产生的包容性喷流的喷流特性的测量结果。数据样本是在2010年期间在LHC用CMS检测器收集的,对应于36个反向皮巴的积分亮度。平均带电强子多重数,微分和积分喷流形状分布,和两个独立的时刻的形状分布测量的喷流横向动量的函数与反kT算法重建。测量的可观测量被校正到粒子水平,并与各种QCD蒙特卡罗发生器的预测进行比较。

英文摘要:

Measurements of jet characteristics from inclusive jet production in proton-proton collisions at a centre-of-mass energy of 7 TeV are presented. The data sample was collected with the CMS detector at the LHC during 2010 and corresponds to an integrated luminosity of 36 inverse picobarns. The mean charged hadron multiplicity, the differential and integral jet shape distributions, and two independent moments of the shape distributions are measured as functions of the jet transverse momentum for jets reconstructed with the anti-kT algorithm. The measured observables are corrected to the particle level and compared with predictions from various QCD Monte Carlo generators.

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