Ratios of dijet production cross sections as a function of the absolute difference in rapidity between jets in proton-proton collisions at sqrt(s) = 7 TeV

Abstract

A study of dijet production in proton-proton collisions was performed at sqrt(s) = 7 TeV for jets with pt > 35 GeV and abs(y) < 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 abs(Delta(y)) is measured for the first time up to abs(Delta(y)) = 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 abs(Delta(y)) than observed in the data. The BFKL-motivated generators CASCADE and HEJ+ARIADNE predict for these ratios a significantly stronger rise than observed.

Submitted to the European Physical Journal C

References in corpus (5)

• PYTHIA 6.4 Physics and Manual
• Herwig++ Physics and Manual
• Interleaved Parton Showers and Tuning Prospects
• Measurement of the inclusive jet cross section in $p\bar{p}$ collisions at $\sqrt{s}=1.96\mathrm{TeV}$
• The CCFM Monte Carlo generator CASCADE 2.2.0

Cited by in corpus (11)

• Measurements of jet vetoes and azimuthal decorrelations in dijet events produced in $pp$ collisions at $\sqrt{s}$ = 7 TeV using the ATLAS detector
• Forward Drell-Yan and backward jet production as a probe of the BFKL dynamics
• HEJ 2.2: W boson pairs and Higgs boson plus jet production at high energies
• Study of dijet events with large rapidity separation in proton-proton collisions at $\sqrt{s}=$ 2.76 TeV
• Next-to-leading BFKL evolution for dijets with large rapidity separation at different LHC energies
• HEJ 2.1: High-energy Resummation with Vector Bosons and Next-to-Leading Logarithms
• Parton shower contributions to jets from high rapidities at the LHC
• Matrix Elements with Vetoes in the CASCADE Monte Carlo Event Generator
• The High Energy Jets Framework
• Dijets with a large rapidity separation in the next-to-leading order BFKL formalism for searches of large extra dimensions at colliders
• CMS results on multijet correlations