• Browse all
Measurement of differential $J/\psi$ production cross sections and forward-backward ratios in p + Pb collisions with the ATLAS detector

The collaboration
Phys.Rev. C92 (2015) 034904, 2015

Abstract (data abstract)
CERN-LHC. Measurements of differential cross-sections for J/psi production in p+Pb collisions at sqrt(s_NN) = 5.02 TeV at the LHC with the ATLAS detector are presented. The data set used corresponds to an integrated luminosity of 28.1 nb^-1. The J/psi mesons are reconstructed in the dimuon decay channel over the transverse momentum range 8< pT< 30 GeV and over the center-of-mass rapidity range -2.87< y* <1.94. Prompt J/psi are separated from J/psi resulting from b-hadron decays through an analysis of the distance between the J/psi decay vertex and the event primary vertex. The differential cross-section for production of nonprompt J/psi is compared to a FONLL calculation that does not include nuclear effects. Forward-backward production ratios are presented and compared to theoretical predictions. These results constrain the kinematic dependence of nuclear modifications of charmonium and b-quark production in p+Pb collisions.

• Table 1

Data from Figure 3 and Table VII

10.17182/hepdata.77275.v1/t1

Measured non-prompt fraction.

• Table 2

Data from Figure 3 and Table VII

10.17182/hepdata.77275.v1/t2

Measured non-prompt fraction.

• Table 3

Data from Figure 4 and Table V

10.17182/hepdata.77275.v1/t3

Measured prompt J/psi differential cross-section multiplied by branching ratio. The first systematic uncertainty is the combined systematic uncertainty excluding luminosity,...

• Table 4

Data from Figure 4 and Table VI

10.17182/hepdata.77275.v1/t4

Measured non-prompt J/psi differential cross-section multiplied by branching ratio. The first systematic uncertainty is the combined systematic uncertainty excluding luminosity,...

• Table 5

Data from Figure 5 and Table V

10.17182/hepdata.77275.v1/t5

Measured prompt J/psi differential cross-section multiplied by branching ratio. The first systematic uncertainty is the combined systematic uncertainty excluding luminosity,...

• Table 6

Data from Figure 5 and Table VI

10.17182/hepdata.77275.v1/t6

Measured non-prompt J/psi differential cross-section multiplied by branching ratio. The first systematic uncertainty is the combined systematic uncertainty excluding luminosity,...

• Table 7

Data from Figure 6 and Table VIII

10.17182/hepdata.77275.v1/t7

Measured forward-backward production ratio.

• Table 8

Data from Figure 7 and Table VIII

10.17182/hepdata.77275.v1/t8

Measured forward-backward production ratio.