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Ratios of dijet production cross sections as a function of the absolute difference in rapidity between jets in proton-proton collisions at root s=7 TeV
CMS collaboration
2012
发表期刊EUROPEAN PHYSICAL JOURNAL C
卷号72期号:11
通讯作者Chatrchyan, S (reprint author), Yerevan Phys Inst, Yerevan 375036, Armenia.
摘要A study of dijet production in proton-proton collisions was performed at root s = 7 TeV for jets with p(T) > 35 GeV and vertical bar y vertical bar < 4.7 using data collected with the CMS detector at the LHC in 2010. Events with at least one pair of jets are denoted as "inclusive". Events with exactly one pair of jets are called "exclusive". The ratio of the cross section of all pairwise combinations of jets to the exclusive dijet cross section as a function of the rapidity difference between jets vertical bar Delta y vertical bar is measured for the first time up to vertical bar Delta y vertical bar = 9.2. The ratio of the cross section for the pair consisting of the most forward and the most backward jet from the inclusive sample to the exclusive dijet cross section is also presented. The predictions of the Monte Carlo event generators PYTHIA6 and PYTHIA8 agree with the measurements. In both ratios the HERWIG++ generator exhibits a more pronounced rise versus vertical bar Delta y vertical bar than observed in the data. The BFKL-motivated generators CASCADE and HEJ+ARIADNE predict for these ratios a significantly stronger rise than observed.
关键词INELASTIC EP SCATTERING HEAVY-QUARK PRODUCTION PERTURBATION-THEORY ENERGY HERA QCD SIMULATION PHYSICS MODEL
学科领域Physics
DOI10.1140/epjc/s10052-012-2216-6
收录类别SCI
语种英语
WOS类目Physics, Particles & Fields
WOS记录号WOS:000312074800018
引用统计
被引频次:8[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.ihep.ac.cn/handle/311005/213396
专题粒子天体物理中心
作者单位中国科学院高能物理研究所
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CMS collaboration. Ratios of dijet production cross sections as a function of the absolute difference in rapidity between jets in proton-proton collisions at root s=7 TeV[J]. EUROPEAN PHYSICAL JOURNAL C,2012,72(11).
APA CMS collaboration.(2012).Ratios of dijet production cross sections as a function of the absolute difference in rapidity between jets in proton-proton collisions at root s=7 TeV.EUROPEAN PHYSICAL JOURNAL C,72(11).
MLA CMS collaboration."Ratios of dijet production cross sections as a function of the absolute difference in rapidity between jets in proton-proton collisions at root s=7 TeV".EUROPEAN PHYSICAL JOURNAL C 72.11(2012).
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