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Measurement of prompt and nonprompt J/psi production in pp and pPb collisions at sqrt(s[NN]) = 5.02 TeV

The collaboration
No Journal Information, 2017

Abstract (data abstract)
CERN-LHC. Measurements of J/$\psi$ meson production in proton-proton (pp) and proton-lead (pPb) collisions at a center-of-mass energy per nucleon pair of 5.02 TeV by the CMS experiments at the LHC are reported. The data samples used in the analysis correspond to integrated luminosities of 28 pb$^{-1}$ and 35 nb$^{-1}$ for pp and pPb collisions, respectively. Prompt and nonprompt J/$\psi$ mesons, the latter produced in the decay of B hadrons, are measured in their dimuon decay channels. Differential cross sections are measured in the transverse momentum range of 2$<p_{\mathrm{T}}<$30 GeV/c, and center-of-mass rapidity of $|y_{\mathrm{CM}}|<$2.4 (pp) and -2.87$<y_{\mathrm{CM}}<$1.93 (pPb). The nuclear modification factor, $R_{\mathrm{pPb}}$ is measured as a function of both $p_{\mathrm{T}}$ and $y_{\mathrm{CM}}$. Small modifications to the J/$\psi$ cross sections are observed in pPb relative to pp collisions. The ratio of production cross sections in p-going and Pb-going directions ,$R_{\mathrm{pPb}}$, studied as functions of $p_{\mathrm{T}}$ and $y_{\mathrm{CM}}$, shows a significant decrease for increasing transverse energy deposited at large pesudorapidities. These results, which cover a wide kinematic range, provide new insight on the role of cold nuclear matter effects on prompt and nonprompt J/$\psi$ production. See arXiv:1702.01462 for more details.

• #### Table 1

Data from Fig. 2 of preprint and paper (upper left)

10.17182/hepdata.77480.v1/t1

Differential cross section (multiplied by the dimuon branching fraction) of prompt J/$\psi$ mesons in pp collisions at forward $y_{\mathrm{CM}}$.

• #### Table 2

Data from Fig. 2 of preprint and paper (lower left)

10.17182/hepdata.77480.v1/t2

Differential cross section (multiplied by the dimuon branching fraction) of prompt J/$\psi$ mesons in pp collisions at backward $y_{\mathrm{CM}}$.

• #### Table 3

Data from Fig. 2 of preprint and paper (upper right)

10.17182/hepdata.77480.v1/t3

Differential cross section (multiplied by the dimuon branching fraction) of prompt J/$\psi$ mesons in pPb collisions at forward $y_{\mathrm{CM}}$.

• #### Table 4

Data from Fig. 2 of preprint and paper (lower right)

10.17182/hepdata.77480.v1/t4

Differential cross section (multiplied by the dimuon branching fraction) of prompt J/$\psi$ mesons in pPb collisions at backward $y_{\mathrm{CM}}$.

• #### Table 5

Data from Fig. 3 of preprint (left) and paper (upper)

10.17182/hepdata.77480.v1/t5

Rapidity dependence of the cross section (multiplied by the dimuon branching fraction) for prompt J/$\psi$ mesons in the $p_{\mathrm{T}}$ intervals...

• #### Table 6

Data from Fig. 3 of preprint (right) and paper (lower)

10.17182/hepdata.77480.v1/t6

Rapidity dependence of the cross section (multiplied by the dimuon branching fraction) for prompt J/$\psi$ mesons in the $p_{\mathrm{T}}$ intervals...

• #### Table 7

Data from Fig. 4 of preprint and paper

10.17182/hepdata.77480.v1/t7

Transverse momentum dependence of $R_{\mathrm{pPb}}$ for prompt J/$\psi$ mesons in seven $y_{\mathrm{CM}}$ ranges.

• #### Table 8

Data from Fig. 5 of preprint (left) and paper (upper)

10.17182/hepdata.77480.v1/t8

Rapidity dependence of $R_{\mathrm{pPb}}$ for prompt J/$\psi$ mesons in $p_{\mathrm{T}}$ range 6.5<$p_{\mathrm{T}}$<10 GeV.

• #### Table 9

Data from Fig. 5 of preprint (right) and paper (lower)

10.17182/hepdata.77480.v1/t9

Rapidity dependence of $R_{\mathrm{pPb}}$ for prompt J/$\psi$ mesons in $p_{\mathrm{T}}$ range 10<$p_{\mathrm{T}}$<30 GeV.

• #### Table 10

Data from Fig. 6 of preprint (left) and paper (top)

10.17182/hepdata.77480.v1/t10

Transverse momentum dependence of $R_{\mathrm{FB}}$ for prompt J/$\psi$ mesons in the 0<$y_{\mathrm{CM}}$<0.9 range.

• #### Table 11

Data from Fig. 6 of preprint (middle) and paper (middle)

10.17182/hepdata.77480.v1/t11

Transverse momentum dependence of $R_{\mathrm{FB}}$ for prompt J/$\psi$ mesons in the 0.9<$y_{\mathrm{CM}}$<1.5 range.

• #### Table 12

Data from Fig. 6 of preprint (right) and paper (lower)

10.17182/hepdata.77480.v1/t12

Transverse momentum dependence of $R_{\mathrm{FB}}$ for prompt J/$\psi$ mesons in the 1.5<$y_{\mathrm{CM}}$<1.93 range.

• #### Table 13

Data from Fig. 7 of preprint and paper

10.17182/hepdata.77480.v1/t13

Dependence of $R_{\mathrm{FB}}$ for prompt J/$\psi$ mesons on the hadronic activity in the event, given by the transverse energy deposited...

• #### Table 14

Data from Fig. 8 of preprint and paper (upper left)

10.17182/hepdata.77480.v1/t14

Differential cross section (multiplied by the dimuon branching fraction) of nonprompt J/$\psi$ mesons in pp collisions at forward $y_{\mathrm{CM}}$.

• #### Table 15

Data from Fig. 8 of preprint and paper (lower left)

10.17182/hepdata.77480.v1/t15

Differential cross section (multiplied by the dimuon branching fraction) of nonprompt J/$\psi$ mesons in pp collisions at backward $y_{\mathrm{CM}}$.

• #### Table 16

Data from Fig. 8 of preprint and paper (upper right)

10.17182/hepdata.77480.v1/t16

Differential cross section (multiplied by the dimuon branching fraction) of nonprompt J/$\psi$ mesons in pPb collisions at forward $y_{\mathrm{CM}}$.

• #### Table 17

Data from Fig. 8 of preprint and paper (lower right)

10.17182/hepdata.77480.v1/t17

Differential cross section (multiplied by the dimuon branching fraction) of nonprompt J/$\psi$ mesons in pPb collisions at backward $y_{\mathrm{CM}}$.

• #### Table 18

Data from Fig. 9 of preprint (left) and paper (upper)

10.17182/hepdata.77480.v1/t18

Rapidity dependence of the cross section (multiplied by the dimuon branching fraction) for nonprompt J/$\psi$ mesons in the $p_{\mathrm{T}}$ intervals...

• #### Table 19

Data from Fig. 9 of preprint (right) and paper (lower)

10.17182/hepdata.77480.v1/t19

Rapidity dependence of the cross section (multiplied by the dimuon branching fraction) for nonprompt J/$\psi$ mesons in the $p_{\mathrm{T}}$ intervals...

• #### Table 20

Data from Fig. 10 of preprint and paper

10.17182/hepdata.77480.v1/t20

Transverse momentum dependence of $R_{\mathrm{pPb}}$ for nonprompt J/$\psi$ mesons in seven $y_{\mathrm{CM}}$ ranges.

• #### Table 21

Data from Fig. 11 of preprint (left) and paper (upper)

10.17182/hepdata.77480.v1/t21

Rapidity dependence of $R_{\mathrm{pPb}}$ for nonprompt J/$\psi$ mesons in $p_{\mathrm{T}}$ range 6.5<$p_{\mathrm{T}}$<10 GeV.

• #### Table 22

Data from Fig. 11 of preprint (right) and paper (lower)

10.17182/hepdata.77480.v1/t22

Rapidity dependence of $R_{\mathrm{pPb}}$ for nonprompt J/$\psi$ mesons in $p_{\mathrm{T}}$ range 10<$p_{\mathrm{T}}$<30 GeV.

• #### Table 23

Data from Fig. 12 of preprint (left) and paper (top)

10.17182/hepdata.77480.v1/t23

Transverse momentum dependence of $R_{\mathrm{FB}}$ for nonprompt J/$\psi$ mesons in the 0<$y_{\mathrm{CM}}$<0.9 range.

• #### Table 24

Data from Fig. 12 of preprint (middle) and paper (middle)

10.17182/hepdata.77480.v1/t24

Transverse momentum dependence of $R_{\mathrm{FB}}$ for nonprompt J/$\psi$ mesons in the 0.9<$y_{\mathrm{CM}}$<1.5 range.

• #### Table 25

Data from Fig. 12 of preprint (right) and paper (lower)

10.17182/hepdata.77480.v1/t25

Transverse momentum dependence of $R_{\mathrm{FB}}$ for nonprompt J/$\psi$ mesons in the 1.5<$y_{\mathrm{CM}}$<1.93 range.

• #### Table 26

Data from Fig. 13 of preprint and paper

10.17182/hepdata.77480.v1/t26

Dependence of $R_{\mathrm{FB}}$ for nonprompt J/$\psi$ mesons on the hadronic activity in the event, given by the transverse energy deposited...