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Inclusive J/$\psi$ production at forward and backward rapidity in p-Pb collisions at $\sqrt{s_{\rm NN}}$ = 8.16 TeV

The ALICE collaboration
No Journal Information, 2018

Abstract (data abstract)
CERN-LHC. Inclusive J/Psi production is studied in pPb interactions at a centre-of-mass energy per nucleon-nucleon collision sqrt(s_NN) =8.16 TeV, using the ALICE detector at the CERN LHC. The J/Psi meson is reconstructed, via its decay to a muon pair, in the centre-of-mass rapidity intervals 2.03<y_cms<3.53 and -4.46<y_cms<2.96, where positive and negative y_cms refer to the p-going and Pb-going direction, respectively. The transverse momentum coverage is pT<20 GeV/c. In this paper, y_cms- and pT-differential cross sections for inclusive J/Psi production are presented, and the corresponding nuclear modification factors RpPb are shown. Forward results show a suppression of the J/Psi yield with respect to pp collisions, concentrated in the region pT<~5 GeV/c. At backward rapidity no significant suppression is observed. The results are compared to previous measurements by ALICE in pPb collisions at sqrt(s_NN) = 5.02 TeV and to theoretical calculations. Finally, the ratios RFB between forward- and backward-y_cms RpPb values are shown and discussed.

  • Table 1

    Data from Figure 2

    10.17182/hepdata.83702.v1/t1

    The y-differential inclusive JPsi cross section obtained in p-Pb and Pb-p collisions. The first uncertainty is statistical, the second one...

  • Table 2

    Data from Figure 3 (results in -4.46 <y< -2.96)

    10.17182/hepdata.83702.v1/t2

    The pt-differential inclusive JPsi cross section obtained in Pb-p collisions. The first uncertainty is statistical, the second one is the...

  • Table 3

    Data from Figure 3 (results in 2.03 <y< 3.53)

    10.17182/hepdata.83702.v1/t3

    The pt-differential inclusive JPsi nuclear modification factor obtained in p-Pb. The first uncertainty is statistical, the second one is the...

  • Table 4

    Data from Figure 4

    10.17182/hepdata.83702.v1/t4

    The rapidity dependence of the inclusive JPsi nuclear modification factor obtained in p-Pb and Pb-p collisions. The first uncertainty is...

  • Table 5

    Data from Figure 5 (left)

    10.17182/hepdata.83702.v1/t5

    The pt-differential inclusive JPsi nuclear modification factor obtained in Pb-p collisions. The first uncertainty is statistical, the second one is...

  • Table 6

    Data from Figure 5 (right)

    10.17182/hepdata.83702.v1/t6

    The pt-differential inclusive JPsi nuclear modification factor obtained in p-Pb collisions. The first uncertainty is statistical, the second one is...

  • Table 7

    Data from Figure 6 (left)

    10.17182/hepdata.83702.v1/t7

    The forward to backward ratio RFB of the inclusive JPsi nuclear modification factors. The first uncertainty is statistical, the second...

  • Table 8

    Data from Figure 6 (right)

    10.17182/hepdata.83702.v1/t8

    The pT dependence of the forward to backward ratio RFB of the inclusive JPsi nuclear modification factors. The first uncertainty...

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