Measurements of jet vetoes and azimuthal decorrelations in dijet events produced in pp collisions at root s=7 TeV using the ATLAS detector
ATLAS collaboration
刊名EUROPEAN PHYSICAL JOURNAL C
2014
卷号74期号:11
关键词COLOR-SINGLET EXCHANGE RAPIDITY GAPS (P)OVER-BAR-P COLLISIONS P(P)OVER-BAR COLLISIONS CROSS-SECTION DIPOLE MODEL PHOTOPRODUCTION SCATTERING SIMULATION HERA
学科分类Physics
DOI10.1140/epjc/s10052-014-3117-7
通讯作者Aad, G (reprint author), Univ Adelaide, Dept Phys, Adelaide, SA, Australia.
英文摘要Additional jet activity in dijet events is measured using pp collisions at ATLAS at a centre-of-mass energy of 7 TeV, for jets reconstructed using the anti-k(t) algorithm with radius parameter R = 0.6. This is done using variables such as the fraction of dijet events without an additional jet in the rapidity interval bounded by the dijet subsystem and correlations between the azimuthal angles of the dijets. They are presented, both with and without a veto on additional jet activity in the rapidity interval, as a function of the scalar average of the transverse momenta of the dijets and of the rapidity interval size. The double differential dijet cross section is also measured as a function of the interval size and the azimuthal angle between the dijets. These variables probe differences in the approach to resummation of large logarithms when performing QCD calculations. The data are compared to POWHEG, interfaced to the PYTHIA 8 and HERWIG parton shower generators, as well as to HEJ with and without interfacing it to the ARIADNE parton shower generator. None of the theoretical predictions agree with the data across the full phase-space considered; however, POWHEG+PYTHIA8 and HEJ+ARIADNE are found to provide the best agreement with the data. These measurements use the full data sample collected with the ATLAS detector in 7 TeV pp collisions at the LHC and correspond to integrated luminosities of 36.1 pb(-1) and 4.5 fb(-1) for data collected during 2010 and 2011, respectively.
类目[WOS]Physics, Particles & Fields
收录类别SCI
语种英语
WOS记录号WOS:000347169900001
引用统计
被引频次:1[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/311005/213839
专题中国科学院高能物理研究所_实验物理中心_期刊论文
作者单位中国科学院高能物理研究所
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ATLAS collaboration. Measurements of jet vetoes and azimuthal decorrelations in dijet events produced in pp collisions at root s=7 TeV using the ATLAS detector[J]. EUROPEAN PHYSICAL JOURNAL C,2014,74(11).
APA ATLAS collaboration.(2014).Measurements of jet vetoes and azimuthal decorrelations in dijet events produced in pp collisions at root s=7 TeV using the ATLAS detector.EUROPEAN PHYSICAL JOURNAL C,74(11).
MLA ATLAS collaboration."Measurements of jet vetoes and azimuthal decorrelations in dijet events produced in pp collisions at root s=7 TeV using the ATLAS detector".EUROPEAN PHYSICAL JOURNAL C 74.11(2014).
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