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Measurement of quarkonium production at forward rapidity in $pp$ collisions at $\sqrt{s} = 7$ TeV

The ALICE collaboration
Eur.Phys.J. C74 (2014) 2974, 2014

Abstract (data abstract)
CERN-LHC. The inclusive production cross sections at forward rapidity of jpsi, psiprime, Upsilon(1S) and Upsilon(2S) are measured in pp collisions at s^1/2 = 7 TeV with the ALICE detector. The analysis is based on a data sample corresponding to an integrated luminosity of 1.35 pb^-1 collected at the LHC. Quarkonia are reconstructed in the dimuon-decay channel and the signal yields are evaluated using a fit to the mu^+mu^- invariant mass distributions. The differential production cross sections are measured as a function of the transverse momentum pt and rapidity y, over the transverse momentum range 0 < pt < 20 GeV for jpsi and 0 < pt < 12 GeV for all other resonances and for rapidities 2.5 < y < 4. The cross sections integrated over these pt and y ranges are: - sigma_jpsi = 6.78 +- 0.04 +- 0.64 mub - sigma_psiprime = 1.26 +- 0.08 +- 0.21 mub - sigma_Upsilon(1S) = 54.2 +- 5.0 +- 6.1 nb - sigma_Upsilon(2S) = 18.4 +- 3.7 +- 2.1 nb where the first uncertainty is statistical and the second one is systematic. These cross sections are obtained assuming unpolarized quarkonium production.

  • Table 1

    Data from Figure 2a

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    Differential production cross sections of J/psi as a function of pT.

  • Table 2

    Data from Figure 2b

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

  • Table 3

    Data from Table 2

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    integrated production cross section of J/psi.

  • Table 4

    Data from Figure 2c

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    Differential production cross sections of psi(2S) as a function of pT.

  • Table 5

    Data from Figure 2d

    10.17182/hepdata.65214.v1/t5

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

  • Table 6

    Data from Table 2

    10.17182/hepdata.65214.v1/t6

    integrated production cross section of psi(2S).

  • Table 7

    Data from Figure 3a

    10.17182/hepdata.65214.v1/t7

    psi(2S) over J/psi ratio as a function of pt.

  • Table 8

    Data from Figure 3b

    10.17182/hepdata.65214.v1/t8

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

  • Table 9

    Data from Page 9 of Preprint

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

  • Table 10

    Data from Figure 4a

    10.17182/hepdata.65214.v1/t10

    Differential production cross sections of Upsilon(1S) as a function of pT.

  • Table 11

    Data from Figure 4b

    10.17182/hepdata.65214.v1/t11

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

  • Table 12

    Data from Table 2

    10.17182/hepdata.65214.v1/t12

    integrated production cross section of Upsilon (1S).

  • Table 13

    Data from Table 2

    10.17182/hepdata.65214.v1/t13

    integrated production cross section of Upsilon (2S).

  • Table 14

    Data from Page 10 of Preprint

    10.17182/hepdata.65214.v1/t14

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

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