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Differential studies of inclusive J/ψ and ψ(2S) production at forward rapidity in Pb-Pb collisions at $\sqrt{s_{\mathrm{NN}}}=2.76$ TeV

The collaboration
JHEP 1605 (2016) 179, 2016

Abstract (data abstract)
CERN-LHC. The production of J/$\psi$ and $\psi$(2S) was studied with the ALICE detector in Pb-Pb collisions at the LHC. The measurement was performed at forward rapidity ($2.5<y<4$) down to zero transverse momentum ($p_{\rm T}$) in the dimuon decay channel. Inclusive J/$\psi$ yields were extracted in different centrality classes and the centrality dependence of the average $p_{\rm T}$ is presented. The J/$\psi$ suppression, quantified with the nuclear modification factor ($R_{\rm AA}$), was measured as a function of centrality, transverse momentum and rapidity. Comparisons with similar measurements at lower collision energy and theoretical models indicate that the J/$\psi$ production is the result of an interplay between color screening and recombination mechanisms in a deconfined partonic medium, or at its hadronization. Results on the $\psi$(2S) suppression are provided via the ratio of $\psi$(2S) over J/$\psi$ measured in pp and Pb-Pb collisions.

• #### Table 1

Data from Table 3, Figure 6

10.17182/hepdata.73094.v1/t1

Values of $\langle p_{\rm T}\rangle$ and $\langle p^2_{\rm T}\rangle$ of inclusive J/$\psi$ measured in $0<p_{\rm T}<8$ GeV/$c$ and $2.5<y<4$. Statistical...

• #### Table 2

Data from Table A.1, Figure 5

10.17182/hepdata.73094.v1/t2

Inclusive J/$\psi$ yields in $p_{\rm T}$ intervals for the 0-20%, 20-40% and 40-90% most central Pb-Pb collisions. The rapidity range...

• #### Table 3

Data from Table A.2, Figure 7

10.17182/hepdata.73094.v1/t3

Inclusive J/$\psi$ $R_{\rm AA}$ and Pb-Pb yields as a function of centrality, $p_{\rm T}<8$ GeV/$c$ and $2.5<y<4.0$. Statistical and systematic...

• #### Table 4

Data from Table A.3, Figure 8

10.17182/hepdata.73094.v1/t4

Inclusive J/$\psi$ $R_{\rm AA}$ and Pb-Pb yields as a function of centrality, $p_{\rm T}<2$ GeV/$c$ and $2.5<y<4.0$. Statistical and systematic...

• #### Table 5

Data from Table A.4, Figure 8

10.17182/hepdata.73094.v1/t5

Inclusive J/$\psi$ $R_{\rm AA}$ and Pb-Pb yields as a function of centrality, $2<p_{\rm T}<5$ GeV/$c$ and $2.5<y<4.0$. Statistical and systematic...

• #### Table 6

Data from Table A.5, Figure 8

10.17182/hepdata.73094.v1/t6

Inclusive J/$\psi$ $R_{\rm AA}$ and Pb-Pb yields as a function of centrality, $5<p_{\rm T}<8$ GeV/$c$ and $2.5<y<4.0$. Statistical and systematic...

• #### Table 7

Data from Table A.6, Figure 9

10.17182/hepdata.73094.v1/t7

Inclusive J/$\psi$ $R_{\rm AA}$ and Pb-Pb yields as a function of $p_{\rm T}$ for the 0-20% centrality class and $2.5<y<4.0$....

• #### Table 8

Data from Table A.7, Figure 9

10.17182/hepdata.73094.v1/t8

Inclusive J/$\psi$ $R_{\rm AA}$ and Pb-Pb yields as a function of $p_{\rm T}$ for the 20-40% centrality class and $2.5<y<4.0$....

• #### Table 9

Data from Table A.8

10.17182/hepdata.73094.v1/t9

Inclusive J/$\psi$ $R_{\rm AA}$ and Pb-Pb yields as a function of $p_{\rm T}$ for the 0-40% centrality class and $2.5<y<4.0$....

• #### Table 10

Data from Table A.9, Figure 9

10.17182/hepdata.73094.v1/t10

Inclusive J/$\psi$ $R_{\rm AA}$ and Pb-Pb yields as a function of $p_{\rm T}$ for the 40-90% centrality class and $2.5<y<4.0$....

• #### Table 11

Data from Table A.10, Figure 9

10.17182/hepdata.73094.v1/t11

Inclusive J/$\psi$ $R_{\rm AA}$ and Pb-Pb yields as a function of $p_{\rm T}$ for the 0-90% centrality class and $2.5<y<4.0$....

• #### Table 12

Data from Table A.11, Figure 10

10.17182/hepdata.73094.v1/t12

Inclusive J/$\psi$ $R_{\rm AA}$ and Pb-Pb yields as a function of $y$ for the 0-90% centrality class and $p_{\rm T}<8$...

• #### Table 13

Data from Table A.12

10.17182/hepdata.73094.v1/t13

Inclusive J/$\psi$ $R_{\rm AA}$ as a function of centrality, $0.3 <p_{\rm T}<8$ GeV/$c$ and $0.3<p_{\rm T}<2$ GeV/$c$ in the rapidity...

• #### Table 14

Data from Table A.13

10.17182/hepdata.73094.v1/t14

Inclusive J/$\psi$ $R_{\rm AA}$ for $2.5<y<4.0$ in the centrality classes 0-90%, 0-20%, 20-40 and 40-90% for the lowest $p_{\rm T}$...

• #### Table 15

Data from Table A.14, Figure 11

10.17182/hepdata.73094.v1/t15

Inclusive $[\psi\text{(2S)/J/}\psi]_{\rm Pb-Pb}$ and $[\psi\text{(2S)/J/}\psi]_{\rm Pb-Pb}\;/\;[\psi\text{(2S)/J/}\psi]_{\rm pp}$ ratios as a function of centrality for $p_{\rm T}<3$ GeV/$c$. Statistical and systematic...

• #### Table 16

Data from Table A.14, Figure 11

10.17182/hepdata.73094.v1/t16

Inclusive $[\psi\text{(2S)/J/}\psi]_{\rm Pb-Pb}$ and $[\psi\text{(2S)/J/}\psi]_{\rm Pb-Pb}\;/\;[\psi\text{(2S)/J/}\psi]_{\rm pp}$ ratios as a function of centrality for $3<p_{\rm T}<8$ GeV/$c$.