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Measurement of charged jet production cross sections and nuclear modification in p-Pb collisions at $\sqrt{s_\rm{NN}} = 5.02$ TeV

The ALICE collaboration
Phys.Lett. B749 (2015) 68-81, 2015

Abstract (data abstract)
CERN-LHC-ALICE. Charged jet production cross sections in p-Pb collisions at $\sqrt{s_\mathrm{NN}} = 5.02$ TeV measured with the ALICE detector at the LHC are presented. Using the anti-$k_T$ algorithm, jets have been reconstructed in the central rapidity region from charged particles with resolution parameters $R = 0.2$ and $R = 0.4$. The reconstructed jets have been corrected for detector effects and the underlying event background. To calculate the nuclear modification factor $R_\mathrm{pPb}$ of charged jets in p-Pb collisions, a pp reference was constructed by scaling previously measured charged jet spectra at $\sqrt{s} = 7$ TeV. In the transverse momentum range $20 \leq p_\mathrm{T,\;ch\;jet} \leq 120$ GeV/$c$, $R_\mathrm{pPb}$ is found to be consistent with unity, indicating the absence of strong nuclear matter effects on jet production. Major changes to the radial jet structure are probed via the ratio of jet production cross sections reconstructed with the two different resolution parameters. This ratio is found to be similar to the measurement in pp collisions at $\sqrt{s} = 7$ TeV and to the expectations from PYTHIA pp simulations and NLO pQCD calculations at $\sqrt{s_\mathrm{NN}} = 5.02$ TeV.

  • Table 1

    Data from Figure 3

    10.17182/hepdata.68911.v1/t1

    $p_\mathrm{T}$-differential production cross section of charged jets in p-Pb collisions at 5.02 TeV for $R = 0.2$ measured with the...

  • Table 2

    Data from Figure 3

    10.17182/hepdata.68911.v1/t2

    $p_\mathrm{T}$-differential production cross section of charged jets in p-Pb collisions at 5.02 TeV for R = 0.2 calculated with a...

  • Table 3

    Data from Figure 3

    10.17182/hepdata.68911.v1/t3

    $p_\mathrm{T}$-differential production cross section of charged jets in p-Pb collisions at 5.02 TeV for R = 0.2 measured with the...

  • Table 4

    Data from Figure 3

    10.17182/hepdata.68911.v1/t4

    $p_\mathrm{T}$-differential production cross section of charged jets in p-Pb collisions at 5.02 TeV for R = 0.2 measured with the...

  • Table 5

    Data from Figure 4

    10.17182/hepdata.68911.v1/t5

    $p_\mathrm{T}$-differential production cross section of charged jets in p-Pb collisions at 5.02 TeV for R = 0.4 measured with the...

  • Table 6

    Data from Figure 4

    10.17182/hepdata.68911.v1/t6

    $p_\mathrm{T}$-differential production cross section of charged jets in p-Pb collisions at 5.02 TeV for R = 0.4 calculated with a...

  • Table 7

    Data from Figure 4

    10.17182/hepdata.68911.v1/t7

    $p_\mathrm{T}$-differential production cross section of charged jets in p-Pb collisions at 5.02 TeV for R = 0.4 calculated with a...

  • Table 8

    Data from Figure 5

    10.17182/hepdata.68911.v1/t8

    Nuclear modification factors $R_\mathrm{pPb}$ of charged jets in p-Pb at 5.02 TeV measured with ALICE. Resolution parameter R = 0.2.

  • Table 9

    Data from Figure 5

    10.17182/hepdata.68911.v1/t9

    Nuclear modification factors $R_\mathrm{pPb}$ of charged jets in p-Pb at 5.02 TeV measured with ALICE. Resolution parameter R = 0.4.

  • Table 10

    Data from Figure 6

    10.17182/hepdata.68911.v1/t10

    Charged jet production cross section ratio for different resolution parameter R=0.2/R=0.4 measured with ALICE in p-Pb collisions at 5.02 TeV.

  • Table 11

    Data from Figure 6

    10.17182/hepdata.68911.v1/t11

    Charged jet production cross section ratio for different resolution parameter R=0.2/R=0.4 obtained by Lorentz-boosted NLO pQCD calculations using POWHEG+PYTHIA8 with...

  • Table 12

    Data from Figure 6

    10.17182/hepdata.68911.v1/t12

    Charged jet production cross section ratio for different resolution parameter R=0.2/R=0.4 obtained by PYTHIA6 calculations using tune Perugia 2011 at...

  • Table 13

    Data from Figure 6

    10.17182/hepdata.68911.v1/t13

    Charged jet production cross section ratio for different resolution parameter R=0.2/R=0.4 measured with ALICE in pp collisions at 7 TeV.

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