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Inclusive quarkonium production at forward rapidity in pp collisions at $\sqrt{s}=8$ TeV

The ALICE collaboration
Eur.Phys.J. C76 (2016) 184, 2016

Abstract (data abstract)
CERN-LHC. We report on the inclusive production cross sections of J/$\psi$, $\psi$(2S), $\Upsilon$(1S), $\Upsilon$(2S) and $\Upsilon$(3S), measured at forward rapidity with the ALICE detector in pp collisions at a center-of-mass energy $\sqrt{s} = 8$ TeV. The analysis is based on data collected at the LHC and corresponds to an integrated luminosity of 1.23 pb$^{-1}$. Quarkonia are reconstructed in the dimuon-decay channel. The differential production cross sections are measured as a function of the transverse momentum $p_{\rm T}$ and rapidity $y$, over the $p_{\rm T}$ ranges 0 < $p_{\rm T}$ < 20 GeV/$c$ for J/$\psi$, 0 < $p_{\rm T}$ < 12 GeV/$c$ for all other resonances, and for 2.5 < $y$ < 4. The cross sections, integrated over $y$ and $p_{\rm T}$, and assuming unpolarized quarkonia, are $\sigma_{\text{J}/\psi} = 8.98 \pm 0.04 \pm 0.82$ $\mu$b, $\sigma_{\psi\text{(2S)}} = 1.23 \pm 0.08 \pm 0.22$ $\mu$b, $\sigma_{\Upsilon\text{(1S)}} = 71 \pm 6 \pm 7$ nb, $\sigma_{\Upsilon\text{(2S)}} = 26 \pm 5 \pm 4$ nb and $\sigma_{\Upsilon\text{(3S)}} = 9 \pm 4 \pm 1$ nb, where the first uncertainty is statistical and the second one is systematic. These values agree, within at most 1.4\sigma, with measurements performed by the LHCb collaboration in the same rapidity range.

  • Table 1

    Data from Figure 2a

    10.17182/hepdata.72936.v1/t1

    Differential production cross sections of J/$\psi$ as a function of $p_{\rm T}$.

  • Table 2

    Data from Figure 2b

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    Differential production cross sections of J/$\psi$ as a function of rapidity.

  • Table 3

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    integrated production cross section of J/$\psi$.

  • Table 4

    Data from Figure 2c

    10.17182/hepdata.72936.v1/t4

    Differential production cross sections of $\psi$(2S) as a function of $p_{\rm T}$.

  • Table 5

    Data from Figure 2d

    10.17182/hepdata.72936.v1/t5

    Differential production cross sections of $\psi$(2S) as a function of rapidity.

  • Table 6

    10.17182/hepdata.72936.v1/t6

    integrated production cross section of $\psi$(2S).

  • Table 7

    Data from Figure 3a

    10.17182/hepdata.72936.v1/t7

    Differential production cross sections of $\Upsilon$(1S) as a function of $p_{\rm T}$.

  • Table 8

    Data from Figure 3b

    10.17182/hepdata.72936.v1/t8

    Differential production cross sections of $\Upsilon$(1S) as a function of rapidity.

  • Table 9

    10.17182/hepdata.72936.v1/t9

    integrated production cross section of $\Upsilon$(1S).

  • Table 10

    Data from Figure 3b

    10.17182/hepdata.72936.v1/t10

    Differential production cross sections of $\Upsilon$(2S) as a function of rapidity.

  • Table 11

    10.17182/hepdata.72936.v1/t11

    integrated production cross section of Upsilon (2S).

  • Table 12

    10.17182/hepdata.72936.v1/t12

    integrated production cross section of Upsilon (3S).

  • Table 13

    Data from Figure 4a

    10.17182/hepdata.72936.v1/t13

    $\psi$(2S) over J/$\psi$ ratio as a function of $p_{\rm T}$.

  • Table 14

    Data from Figure 4b

    10.17182/hepdata.72936.v1/t14

    $\psi$(2S) over J/$\psi$ ratio as a function of rapidity.

  • Table 15

    10.17182/hepdata.72936.v1/t15

    integrated $\psi$(2S) over J/$\psi$ production cross section ratio.

  • Table 16

    10.17182/hepdata.72936.v1/t16

    integrated $\Upsilon$(2S) over $\Upsilon$(1S) production cross section ratio.

  • Table 17

    10.17182/hepdata.72936.v1/t17

    integrated $\Upsilon$(3S) over $\Upsilon$(1S) production cross section ratio.

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