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J/$\psi$ production as a function of charged-particle pseudorapidity density in p-Pb collisions at $\sqrt{s_{\rm NN}} = 5.02$ TeV

The ALICE collaboration
Phys.Lett. B776 (2018) 91-104, 2018

Abstract
We report measurements of the inclusive J/$\psi$ yield and average transverse momentum as a function of charged-particle pseudorapidity density ${\rm d}N_{\rm ch}/{\rm d}\eta$ in p-Pb collisions at $\sqrt{s_{\rm NN}} = 5.02$ TeV with ALICE at the LHC. The observables are normalised to their corresponding averages in non-single diffractive events. An increase of the normalised J/$\psi$ yield with normalised ${\rm d}N_{\rm ch}/{\rm d}\eta$ is observed at mid-rapidity and backward rapidity, similar to that found earlier in pp collisions. At forward rapidity, a saturation of the relative yield is observed for high charged-particle multiplicities. The normalised average transverse momentum at forward and backward rapidity increases with multiplicity at low multiplicities and saturates beyond moderate multiplicities. In addition, the forward-to-backward nuclear modification factor ratio is also reported, showing an increasing suppression of J/$\psi$ production at forward rapidity with respect to backward rapidity for increasing charged-particle multiplicity.

  • Table 1

    Data from Figure 3

    10.17182/hepdata.80256.v1/t1

    Relative yield of inclusive J/psi mesons as a function of relative charged-particle pseudorapidity density for forward rapidities 2.03 < y_cms...

  • Table 2

    Data from Figure 3

    10.17182/hepdata.80256.v1/t2

    Relative yield of inclusive J/psi mesons as a function of relative charged-particle pseudorapidity density for backward rapidities -4.46 < y_cms...

  • Table 3

    Data from Figure 3

    10.17182/hepdata.80256.v1/t3

    Relative yield of inclusive J/psi mesons as a function of relative charged-particle pseudorapidity density for central rapidities -1.37 < y_cms...

  • Table 4

    Data from Figure 5

    10.17182/hepdata.80256.v1/t4

    RFB of inclusive JPSI(1S) in p-Pb collisions as a function of relative charged-particle pseudorapidity density.

  • Table 5

    Data from Figure 6

    10.17182/hepdata.80256.v1/t5

    Relative mean transverse momentum of JPSI(1S) mesons for backward rapidity as a function of the relative charged-particle pseudorapidity density.

  • Table 6

    Data from Figure 6

    10.17182/hepdata.80256.v1/t6

    Relative mean transverse momentum of JPSI(1S) mesons for forward rapidity as a function of the relative charged-particle pseudorapidity density.

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