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Measurement of Four-Jet Production in Proton-Proton Collisions at $\sqrt{s}=7$ TeV

The CMS collaboration
Phys.Rev.D 89 (2014) 092010, 2014.

Abstract (data abstract)
CERN-LHC. 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 momentum pT and pseudorapidity eta, together with the correlations in azimuthal angle and the pT balance 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 36 pb-1. The cross section for exactly four jets, with two hard jets of pT>50 GeV each, together with two jets of pT>20 GeV each, within |eta|<4.7 is measured to be sigma=330+-5(stat.)+-45(syst.) nb. 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. The four-jet fiducial region is defined as: - exactly four jets in the final state in |eta|<4.7. - Two jets are required with pT > 50 GeV - Two additional jets are required with pT > 20 GeV.

  • Table 1

    Data from Table 1

    10.17182/hepdata.66510.v1/t1

    The measured fiducial cross section. The first uncertainty is the statistical one, the second uncertainty is the combined systematic uncertainty...

  • Table 2

    Data from Figure 1

    10.17182/hepdata.66510.v1/t2

    Differential cross section as a function of the transverse momentum PT of the leading jet. The first uncertainty is the...

  • Table 3

    Data from Figure 1

    10.17182/hepdata.66510.v1/t3

    Differential cross section as a function of the transverse momentum PT of the subleading jet. The first uncertainty is the...

  • Table 4

    Data from Figure 1

    10.17182/hepdata.66510.v1/t4

    Differential cross section as a function of the transverse momentum PT of the third jet. The first uncertainty is the...

  • Table 5

    Data from Figure 1

    10.17182/hepdata.66510.v1/t5

    Differential cross section as a function of the transverse momentum PT of the fourth jet. The first uncertainty is the...

  • Table 6

    Data from Figure 1

    10.17182/hepdata.66510.v1/t6

    Differential cross section as a function of the pseudorapidity eta of the leading jet. The first uncertainty is the statistical...

  • Table 7

    Data from Figure 1

    10.17182/hepdata.66510.v1/t7

    Differential cross section as a function of the pseudorapidity eta of the subleading jet. The first uncertainty is the statistical...

  • Table 8

    Data from Figure 1

    10.17182/hepdata.66510.v1/t8

    Differential cross section as a function of the pseudorapidity eta of the third jet. The first uncertainty is the statistical...

  • Table 9

    Data from Figure 1

    10.17182/hepdata.66510.v1/t9

    Differential cross section as a function of the pseudorapidity eta of the fourth jet. The first uncertainty is the statistical...

  • Table 10

    Data from Figure 3

    10.17182/hepdata.66510.v1/t10

    Differential cross section as a function of the azimuthal angle DeltaPhi between the third and the fourth jet, normalized to...

  • Table 11

    Data from Figure 3

    10.17182/hepdata.66510.v1/t11

    Differential cross section as a function of the normalized PT balance DELTARELPT between the third and the fourth jet, normalized...

  • Table 12

    Data from Figure 3

    10.17182/hepdata.66510.v1/t12

    Differential cross section as a function of the azimuthal angle between the two dijet planes (first-second and third-fourth jets), normalized...

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