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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 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.