Measurement of four-jet production in proton-proton collisions at s = 7 TeV
Measurement of four-jet production in proton-proton collisions at s = 7 TeV
复制标题
测量 s = 7 TeV 质子-质子碰撞中四射流产生
DOI：
10.1103/physrevd.89.092010
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发表时间：
2014
影响因子：
5
通讯作者：
Chatrchyan S
中科院分区：
文献类型：
--
作者：
Chatrchyan S
本文测量了质子-质子碰撞中产生四个喷流的微分截面随横动量和赝快度的变化，并给出了方位角的关联和喷流之间的平衡。数据样本是在2010年收集的，质心能量为7 TeV，CMS探测器位于LHC，积分光度为。对于正好四个射流，每个射流有两个硬射流，每个射流有两个射流，测量的横截面为。它被发现，固定阶矩阵元计算，包括部分子阵雨描述测量的微分截面在某些地区的相空间，并增加贡献从双部分子散射带来的Monte Carlo预测更接近的数据。
Measurements of the differential cross sections for the production of exactly four jets in proton-proton collisions are presented as a function of the transverse momentumand pseudorapidity, together with the correlations in azimuthal angle and thebalance among the jets. The data sample was collected in 2010 at a center-of-mass energy of 7 TeV with the CMS detector at the LHC, with an integrated luminosity of. The cross section for exactly four jets, with two hard jets ofeach, together with two jets ofeach, withinis measured to be. It is found that fixed-order matrix element calculations including parton showers describe the measured differential cross sections in some regions of phase space only, and that adding contributions from double parton scattering brings the Monte Carlo predictions closer to the data.