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Prompt and non-prompt J/$\psi$ production and nuclear modification at mid-rapidity in p-Pb collisions at ${\bf \sqrt{{\it s}_{\text{NN}}}= 5.02}$ TeV

The ALICE collaboration
No Journal Information, 2018

Abstract (data abstract)
CERN-LHC-ALICE. A measurement of beauty hadron production at mid-rapidity in proton-lead collisions at a nucleon-nucleon centre-of-mass energy $\sqrt{s_{\rm NN}}=5.02$ TeV is presented. The semi-inclusive decay channel of beauty hadrons into J/$\psi$ is considered, where the J/$\psi$ mesons are reconstructed in the dielectron decay channel at mid-rapidity down to transverse momenta of 1.3 GeV/$c$. The ${\rm {b\overline{b}}}$ production cross section at mid-rapidity, ${\rm d}\sigma_{\rm {b\overline{b}}}/{\rm d} y$, and the total cross section extrapolated over full phase space, $\sigma_{\rm {b\overline{b}}}$, are obtained. This measurement is combined with results on inclusive J/$\psi$ production to determine the prompt J/$\psi$ cross sections. The results in p-Pb collisions are then scaled to expectations from pp collisions at the same centre-of-mass energy to derive the nuclear modification factor $R_{\rm pPb}$, and compared to models to study possible nuclear modifications of the production induced by cold nuclear matter effects. $R_{\rm pPb}$ is found to be smaller than unity at low $p_{\rm T}$ for both J/$\psi$ coming from beauty hadron decays and prompt J/$\psi$.

  • Table 2 p-p

    Data from Table 2

    10.17182/hepdata.81948.v1/t1

    Fraction of non-prompt J/$\psi$ in pp collisions at $\sqrt{s_{NN}}$ = 5.02 TeV for different $p_{\rm T}$ ranges, as determined with...

  • Table 2 p-Pb

    Data from Table 2

    10.17182/hepdata.81948.v1/t2

    Fraction of non-prompt J/$\psi$ in pPb collisions at $\sqrt{s_{NN}}$ = 5.02 TeV for different $p_{\rm T}$ ranges.

  • Table 2 p-Pb (CL 95%)

    Data from Table 2

    10.17182/hepdata.81948.v1/t3

    Fraction of non-prompt J/$\psi$ in pPb collisions at $\sqrt{s_{NN}}$ = 5.02 TeV for different $p_{\rm T}$ ranges.

  • Figure 4a

    Data from Figure 4 left panel

    10.17182/hepdata.81948.v1/t4

    d$\sigma$/dy for non-prompt J/$\psi$ in p-Pb collisions at $\sqrt{s_NN}=5.02 TeV$

  • Figure 4b

    Data from Figure 4 right panel

    10.17182/hepdata.81948.v1/t5

    d$^2\sigma$/d$y$d$p_{\rm T}$ in bins of $p_T^{J/\psi}$ for non-prompt J/$\psi$ in p-Pb collisions at $\sqrt{s_{NN}}$ = 5.02 TeV. The data point...

  • Figure 5b

    Data from Figure 5 right panel

    10.17182/hepdata.81948.v1/t6

    Nuclear modification factor ($R_{pPb}$) in bins of $p_T^{J/\psi}$ for non-prompt J/$\psi$ in p-Pb collisions at $\sqrt{s_{NN}}$ = 5.02 TeV. The...

  • Figure 5a

    Data from Figure 5 left panel

    10.17182/hepdata.81948.v1/t7

    Nuclear modification factor ($R_{pPb}$) for non-prompt J/$\psi$ integrated over $p_{\rm T}$ in p-Pb collisions at $\sqrt{s_{NN}}$ = 5.02 TeV at...

  • Table 3

    Data from Table 3

    10.17182/hepdata.81948.v1/t8

    d$^2\sigma$/d $p_{\rm{T}}$dy versus $p_T^{J/\psi}$ for prompt J/$\psi$ in p-Pb collisions at $\sqrt{s_{NN}}$ = 5.02 TeV.

  • Figure 7b

    Data from Figure 7 right panel

    10.17182/hepdata.81948.v1/t9

    Nuclear modification factor ($R_{pPb}$) in bins of $p_T^{J/\psi}$ for prompt J/$\psi$ in p-Pb collisions at $\sqrt{s_{NN}}$ = 5.02 TeV.

  • Figure 7a

    Data from Figure 7 left panel

    10.17182/hepdata.81948.v1/t10

    Nuclear modification factor ($R_{pPb}$) for prompt J/$\psi$ integrated over $p_{\rm T}$ in p-Pb collisions at $\sqrt{s_{NN}}$ = 5.02 TeV at...

  • Text_Page10

    Only in the text of the paper (pag10)

    10.17182/hepdata.81948.v1/t11

    Beauty production cross section at mid-rapidity (d$sigma$/d$y$) in p-Pb collisions at $\sqrt{s_{NN}}$ = 5.02 TeV.

  • Text_Page11

    Only in the text of the paper (pag11)

    10.17182/hepdata.81948.v1/t12

    d$\sigma$/dy for prompt J/$\psi$ in p-Pb collisions at $\sqrt{s_NN}=5.02 TeV$ integrated over $p_{\rm T}$>0.

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