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Measurement of double-parton scattering in inclusive production of four jets with low transverse momentum in proton-proton collisions at $\sqrt{s}$ = 13 TeV

The CMS collaboration
CMS-SMP-20-007, 2021.

Abstract (data abstract)
A study of inclusive four-jet production in proton-proton collisions at a center-of-mass energy of 13 TeV is presented. The transverse momentum of jets within abs(eta) < 4.7 reaches down to 35, 30, 25, and 20 GeV for the first-, second-, third-, and fourth-leading jet, respectively. Differential cross sections are measured as functions of the jet transverse momentum and pseudorapidity, and several other observables that describe the angular correlations between the jets. It is found that the measured distributions show sensitivity to different aspects of the underlying event, parton shower, and matrix element calculations. In particular, the interplay between decorrelations caused by parton shower and double-parton scattering contributions is shown to be important. The double-parton scattering contribution is extracted by means of a template fit of the distributions for single-parton scattering obtained from Monte Carlo event generators and a double-parton scattering distribution constructed from inclusive single-jet events in data. Values of the effective cross section are calculated and discussed in view of previous measurements and of their dependence on the models used to describe the single-parton scattering background.

  • Figure 2a

    Data from Figure 2 (top left), located on page 13.

    10.17182/hepdata.102460.v1/t1

    Comparison of the pT spectrum for the leading jet from data to different PYTHIA8 (P8),HERWIG++ (H++),and HERWIG7 (H7) tunes.

  • Figure 2b

    Data from Figure 2 (top right), located on page 13.

    10.17182/hepdata.102460.v1/t2

    Comparison of the pT spectrum for the sub-leading from data to different PYTHIA8 (P8),HERWIG++ (H++),and HERWIG7 (H7) tunes.

  • Figure 2c

    Data from Figure 2 (bottom left), located on page 13.

    10.17182/hepdata.102460.v1/t3

    Comparison of the pT spectrum for the third-leading from data to different PYTHIA8 (P8),HERWIG++ (H++),and HERWIG7 (H7) tunes.

  • Figure 2d

    Data from Figure 2 (bottom right), located on page 13.

    10.17182/hepdata.102460.v1/t4

    Comparison of the pT spectrum for the fourth-leading from data to different PYTHIA8 (P8),HERWIG++ (H++),and HERWIG7 (H7) tunes.

  • Figure 3a

    Data from Figure 3 (top left), located on page 14.

    10.17182/hepdata.102460.v1/t5

    Comparison of the eta spectrum for the leading jet from data to different PYTHIA8 (P8),HERWIG++ (H++),and HERWIG7 (H7) tunes.

  • Figure 3b

    Data from Figure 3 (top right), located on page 14.

    10.17182/hepdata.102460.v1/t6

    Comparison of the eta spectrum for the sub-leading from data to different PYTHIA8 (P8),HERWIG++ (H++),and HERWIG7 (H7) tunes.

  • Figure 3c

    Data from Figure 3 (bottom left), located on page 14.

    10.17182/hepdata.102460.v1/t7

    Comparison of the eta spectrum for the third-leading from data to different PYTHIA8 (P8),HERWIG++ (H++),and HERWIG7 (H7) tunes.

  • Figure 3d

    Data from Figure 3 (bottom right), located on page 14.

    10.17182/hepdata.102460.v1/t8

    Comparison of the eta spectrum for the fourth-leading from data to different PYTHIA8 (P8),HERWIG++ (H++),and HERWIG7 (H7) tunes.

  • Figure 4a

    Data from Figure 4 (top left), located on page 15.

    10.17182/hepdata.102460.v1/t9

    Comparison of the DeltaPhiSoft distribution from data to different PYTHIA8 (P8),HERWIG++ (H++), and HERWIG7 (H7) tunes. All distributions have been...

  • Figure 4b

    Data from Figure 4 (top right), located on page 15.

    10.17182/hepdata.102460.v1/t10

    Comparison of the DeltaPhiMin distribution from data to different PYTHIA8 (P8),HERWIG++ (H++), and HERWIG7 (H7) tunes. All distributions have been...

  • Figure 4c

    Data from Figure 4 (bottom left), located on page 15.

    10.17182/hepdata.102460.v1/t11

    Comparison of the DeltaY distribution from data to different PYTHIA8 (P8),HERWIG++ (H++), and HERWIG7 (H7) tunes. All distributions have been...

  • Figure 4d

    Data from Figure 4 (bottom right), located on page 15.

    10.17182/hepdata.102460.v1/t12

    Comparison of the phi_ij distribution from data to different PYTHIA8 (P8),HERWIG++ (H++), and HERWIG7 (H7) tunes. All distributions have been...

  • Figure 5a

    Data from Figure 5 (left), located on page 16.

    10.17182/hepdata.102460.v1/t13

    Comparison of the Deltap_{T,Soft} distribution from data to different PYTHIA 8 (P8), HERWIG ++ (H++), and HERWIG 7 (H7) tunes....

  • Figure 5b

    Data from Figure 5 (right), located on page 16.

    10.17182/hepdata.102460.v1/t14

    Comparison of the DeltaS distribution from data to different PYTHIA 8 (P8), HERWIG ++ (H++), and HERWIG 7 (H7) tunes....

  • Figure 6a

    Data from Figure 6 (top left), located on page 19.

    10.17182/hepdata.102460.v1/t15

    Comparison of the pT spectrum for the leading jet from data with different KATIE(KT), MADGRAPH5aMC@NLO(MG5), and POWHEG(PW) models

  • Figure 6b

    Data from Figure 6 (top right), located on page 19.

    10.17182/hepdata.102460.v1/t16

    Comparison of the pT spectrum for the sub-leading from data with different KATIE(KT), MADGRAPH5aMC@NLO(MG5), and POWHEG(PW) models

  • Figure 6c

    Data from Figure 6 (bottom left), located on page 19.

    10.17182/hepdata.102460.v1/t17

    Comparison of the pT spectrum for the third-leading from data to different PYTHIA8 (P8),HERWIG++ (H++),and HERWIG7 (H7) tunes.

  • Figure 6d

    Data from Figure 6 (bottom right), located on page 19.

    10.17182/hepdata.102460.v1/t18

    Comparison of the pT spectrum for the fourth-leading from data with different KATIE(KT), MADGRAPH5aMC@NLO(MG5), and POWHEG(PW) models

  • Figure 7a

    Data from Figure 7 (top left), located on page 20.

    10.17182/hepdata.102460.v1/t19

    Comparison of the eta spectrum for the leading jet from data with different KATIE(KT), MADGRAPH5aMC@NLO(MG5), and POWHEG(PW) models

  • Figure 7b

    Data from Figure 7 (top right), located on page 20.

    10.17182/hepdata.102460.v1/t20

    Comparison of the eta spectrum for the sub-leading from data with different KATIE(KT), MADGRAPH5aMC@NLO(MG5), and POWHEG(PW) models

  • Figure 7c

    Data from Figure 7 (bottom left), located on page 20.

    10.17182/hepdata.102460.v1/t21

    Comparison of the eta spectrum for the third-leading from data with different KATIE(KT), MADGRAPH5aMC@NLO(MG5), and POWHEG(PW) models

  • Figure 7d

    Data from Figure 7 (bottom right), located on page 20.

    10.17182/hepdata.102460.v1/t22

    Comparison of the eta spectrum for the fourth-leading from data with different KATIE(KT), MADGRAPH5aMC@NLO(MG5), and POWHEG(PW) models

  • Figure 8a

    Data from Figure 8 (top left), located on page 21.

    10.17182/hepdata.102460.v1/t23

    Comparison of the DeltaPhiSoft distribution from data to differentKATIE(KT), MADGRAPH5aMC@NLO(MG5), andPOWHEG(PW) implementations. All distributions have been normalized to regions where...

  • Figure 8b

    Data from Figure 8 (top right), located on page 21.

    10.17182/hepdata.102460.v1/t24

    Comparison of the DeltaPhiMin, distribution from data to differentKATIE(KT), MADGRAPH5aMC@NLO(MG5), andPOWHEG(PW) implementations. All distributions have been normalized to regions where...

  • Figure 8c

    Data from Figure 8 (bottom left), located on page 21.

    10.17182/hepdata.102460.v1/t25

    Comparison of the DeltaY and distribution from data to differentKATIE(KT), MADGRAPH5aMC@NLO(MG5), andPOWHEG(PW) implementations. All distributions have been normalized to regions...

  • Figure 8d

    Data from Figure 8 (bottom right), located on page 21.

    10.17182/hepdata.102460.v1/t26

    Comparison of the phi_ij distribution from data to differentKATIE(KT), MADGRAPH5aMC@NLO(MG5), andPOWHEG(PW) implementations. All distributions have been normalized to regions where...

  • Figure 9a

    Data from Figure 9 (left), located on page 22.

    10.17182/hepdata.102460.v1/t27

    Comparison of the Deltap_{T,Soft} distribution from data to different KATIE(KT),MADGRAPH5aMC@NLO(MG5), andPOWHEG(PW) implementations. All distributions havebeen normalized to regions where a...

  • Figure 9b

    Data from Figure 9 (right), located on page 22.

    10.17182/hepdata.102460.v1/t28

    Comparison of the DeltaS distribution from data to different KATIE(KT),MADGRAPH5aMC@NLO(MG5), andPOWHEG(PW) implementations. All distributions havebeen normalized to regions where a...

  • Figure 10a

    Data from Figure 10 (top left), located on page 24.

    10.17182/hepdata.102460.v1/t29

    Comparison of the pT spectrum for the leading jet from data with different SPS+DPS KATIE( KT) and PYTHIA8 (P8) models.

  • Figure 10b

    Data from Figure 10 (top right), located on page 24.

    10.17182/hepdata.102460.v1/t30

    Comparison of the pT spectrum for the sub-leading from data with different SPS+DPS KATIE( KT) and PYTHIA8 (P8) models.

  • Figure 10c

    Data from Figure 10 (bottom left), located on page 24.

    10.17182/hepdata.102460.v1/t31

    Comparison of the pT spectrum for the third-leading from data with different SPS+DPS KATIE( KT) and PYTHIA8 (P8) models.

  • Figure 10d

    Data from Figure 10 (bottom right), located on page 24.

    10.17182/hepdata.102460.v1/t32

    Comparison of the pT spectrum for the fourth-leading from data with different SPS+DPS KATIE( KT) and PYTHIA8 (P8) models.

  • Figure 11a

    Data from Figure 11 (top left), located on page 25.

    10.17182/hepdata.102460.v1/t33

    Comparison of the eta spectrum for the leading jet from data with different SPS+DPS KATIE( KT) and PYTHIA8 (P8) models.

  • Figure 11b

    Data from Figure 11 (top right), located on page 25.

    10.17182/hepdata.102460.v1/t34

    Comparison of the eta spectrum for the sub-leading from data with different SPS+DPS KATIE( KT) and PYTHIA8 (P8) models.

  • Figure 11c

    Data from Figure 11 (bottom left), located on page 25.

    10.17182/hepdata.102460.v1/t35

    Comparison of the eta spectrum for the third-leading from data with different SPS+DPS KATIE( KT) and PYTHIA8 (P8) models.

  • Figure 11d

    Data from Figure 11 (bottom right), located on page 25.

    10.17182/hepdata.102460.v1/t36

    Comparison of the eta spectrum for the fourth-leading from data with different SPS+DPS KATIE( KT) and PYTHIA8 (P8) models.

  • Figure 12a

    Data from Figure 12 (top left), located on page 26.

    10.17182/hepdata.102460.v1/t37

    Comparison of the DeltaPhiSoft distribution from data to different SPS+DPS KATIE (KT) and PYTHIA 8 (P8) models. All distributions have...

  • Figure 12b

    Data from Figure 12 (top right), located on page 26.

    10.17182/hepdata.102460.v1/t38

    Comparison of the DeltaPhiMin distribution from data to different SPS+DPS KATIE (KT) and PYTHIA 8 (P8) models. All distributions have...

  • Figure 12c

    Data from Figure 12 (middle left), located on page 26.

    10.17182/hepdata.102460.v1/t39

    Comparison of the DeltaY distribution from data to different SPS+DPS KATIE (KT) and PYTHIA 8 (P8) models. All distributions have...

  • Figure 12d

    Data from Figure 12 (middle right), located on page 26.

    10.17182/hepdata.102460.v1/t40

    Comparison of the phi_ij distribution from data to different SPS+DPS KATIE (KT) and PYTHIA 8 (P8) models. All distributions have...

  • Figure 12e

    Data from Figure 12 (bottom left), located on page 26.

    10.17182/hepdata.102460.v1/t41

    Comparison of the Deltap_{T,Soft} distributions from data to different SPS+DPS KATIE (KT) and PYTHIA 8 (P8) models. All distributions havebeen...

  • Figure 12f

    Data from Figure 12 (bottom right), located on page 26.

    10.17182/hepdata.102460.v1/t42

    Comparison of the DeltaS distributions from data to different SPS+DPS KATIE (KT) and PYTHIA 8 (P8) models. All distributions have...

  • Figure 13

    Data from Figure 13, located on page 28.

    10.17182/hepdata.102460.v1/t43

    The DeltaS distribution obtained from the mixed data sample compared to predictions from the pure DPS sample in PYTHIA 8...

  • Figure 14

    Data from Figure 14, located on page 29.

    10.17182/hepdata.102460.v1/t44

    The results of the template fit for the POWHEG (PW) NLO 2 -> 2 model without the hard MPI removed....

  • Figure 4a (supplementary)

    Supplementary data to Figure 4 (top left), located on page 15.

    10.17182/hepdata.102460.v1/t45

    Comparison of the DeltaPhiSoft distribution from data to different PYTHIA8 (P8),HERWIG++ (H++), and HERWIG7 (H7) tunes.

  • Figure 4b (supplementary)

    Supplementary data to igure 4 (top right), located on page 15.

    10.17182/hepdata.102460.v1/t46

    Comparison of the DeltaPhiMin distribution from data to different PYTHIA8 (P8),HERWIG++ (H++), and HERWIG7 (H7) tunes.

  • Figure 4c (supplementary)

    Supplementary data to Figure 4 (bottom left), located on page 15.

    10.17182/hepdata.102460.v1/t47

    Comparison of the DeltaY distribution from data to different PYTHIA8 (P8),HERWIG++ (H++), and HERWIG7 (H7) tunes.

  • Figure 4d (supplementary)

    Supplementary data to Figure 4 (bottom right), located on page 15.

    10.17182/hepdata.102460.v1/t48

    Comparison of the phi_ij distribution from data to different PYTHIA8 (P8),HERWIG++ (H++), and HERWIG7 (H7) tunes.

  • Figure 5a (supplementary)

    Supplementary data to Figure 5 (left), located on page 16.

    10.17182/hepdata.102460.v1/t49

    Comparison of the Deltap_{T,Soft} distribution from data to different PYTHIA 8 (P8), HERWIG ++ (H++), and HERWIG 7 (H7) tunes.

  • Figure 5b (supplementary)

    Supplementary data to Figure 5 (right), located on page 16.

    10.17182/hepdata.102460.v1/t50

    Comparison of the DeltaS distribution from data to different PYTHIA 8 (P8), HERWIG ++ (H++), and HERWIG 7 (H7) tunes.

  • Figure 8a (supplementary)

    Supplementary data to Figure 8 (top left), located on page 21.

    10.17182/hepdata.102460.v1/t51

    Comparison of the DeltaPhiSoft distribution from data to different KATIE(KT),MADGRAPH5aMC@NLO(MG5), andPOWHEG(PW) implementations.

  • Figure 8b (supplementary)

    Supplementary data to igure 8 (top right), located on page 21.

    10.17182/hepdata.102460.v1/t52

    Comparison of the DeltaPhiMin distribution from data to different KATIE(KT),MADGRAPH5aMC@NLO(MG5), andPOWHEG(PW) implementations.

  • Figure 8c (supplementary)

    Supplementary data to Figure 8 (bottom left), located on page 21.

    10.17182/hepdata.102460.v1/t53

    Comparison of the DeltaY distribution from data to different KATIE(KT),MADGRAPH5aMC@NLO(MG5), andPOWHEG(PW) implementations.

  • Figure 8d (supplementary)

    Supplementary data to Figure 8 (bottom right), located on page 21.

    10.17182/hepdata.102460.v1/t54

    Comparison of the phi_ij distribution from data to different KATIE(KT),MADGRAPH5aMC@NLO(MG5), andPOWHEG(PW) implementations.

  • Figure 9a (supplementary)

    Supplementary data to Figure 9 (left), located on page 22.

    10.17182/hepdata.102460.v1/t55

    Comparison of the Deltap_{T,Soft} distribution from data to different KATIE(KT),MADGRAPH5aMC@NLO(MG5), andPOWHEG(PW) implementations.

  • Figure 9b (supplementary)

    Supplementary data to Figure 9 (right), located on page 22.

    10.17182/hepdata.102460.v1/t56

    Comparison of the DeltaS distribution from data to different KATIE(KT),MADGRAPH5aMC@NLO(MG5), andPOWHEG(PW) implementations.

  • Figure 12a (supplementary)

    Supplementary data to Figure 12 (top left), located on page 26.

    10.17182/hepdata.102460.v1/t57

    Comparison of the DeltaPhiSoft distribution from data to different SPS+DPS KATIE (KT) and PYTHIA 8 (P8) models.

  • Figure 12b (supplementary)

    Supplementary data to igure 12 (top right), located on page 26.

    10.17182/hepdata.102460.v1/t58

    Comparison of the DeltaPhiMin distribution from data to different SPS+DPS KATIE (KT) and PYTHIA 8 (P8) models.

  • Figure 12c (supplementary)

    Supplementary data to Figure 12 (bottom left), located on page 26.

    10.17182/hepdata.102460.v1/t59

    Comparison of the DeltaY distribution from data to different SPS+DPS KATIE (KT) and PYTHIA 8 (P8) models.

  • Figure 12d (supplementary)

    Supplementary data to Figure 12 (bottom right), located on page 26.

    10.17182/hepdata.102460.v1/t60

    Comparison of the phi_ij distribution from data to different SPS+DPS KATIE (KT) and PYTHIA 8 (P8) models.

  • Figure 12e (supplementary)

    Supplementary data to Figure 12 (left), located on page 26.

    10.17182/hepdata.102460.v1/t61

    Comparison of the Deltap_{T,Soft} distribution from data to different SPS+DPS KATIE (KT) and PYTHIA 8 (P8) models.

  • Figure 12f (supplementary)

    Supplementary data to Figure 12 (bottom right), located on page 26.

    10.17182/hepdata.102460.v1/t62

    Comparison of the DeltaS distributions from data to different SPS+DPS KATIE (KT) and PYTHIA 8 (P8) models.

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