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Measurement of forward $J/\psi$ production cross-sections in $pp$ collisions at $\sqrt{s}=13$ TeV

The LHCb collaboration
JHEP 1510 (2015) 172, 2015

Abstract (data abstract)
CERN-LHC. The production of $J/\psi$ mesons in proton-proton collisions at a centre-of-mass energy of $\sqrt{s} = 13$ TeV is studied with the LHCb detector. Cross-section measurements are performed as a function of the transverse momentum $p_\perp$ and the rapidity $y$ of the $J/\psi$ meson in the region $p_\perp < 14$ GeV/$c$ and $2.0 < y < 4.5$, for both prompt $J/\psi$ mesons and $J/\psi$ mesons from $b$-hadron decays. The production cross-sections integrated over the kinematic coverage are $15.30 \pm 0.03 \pm 0.86$ $\mu$b for prompt $J/\psi$ and $2.34 \pm 0.01 \pm 0.13$ $\mu$b for $J/\psi$ from $b$-hadron decays, assuming zero polarization of the $J/\psi$ meson. The first uncertainties are statistical and the second systematic. The cross-section reported for $J/\psi$ mesons from $b$-hadron decays is used to extrapolate to a total $b\bar{b}$ cross-section. The ratios of the cross-sections with respect to $\sqrt{s} = 8$ TeV are also determined.

  • Table 1

    Data from Figure 2; Table 2

    10.17182/hepdata.70048.v2/t1

    Double differential cross-section for prompt $J/\psi$ mesons as a function of $p_\perp$ in bins of $y$. The first uncertainties are...

  • Table 2

    Data from Figure 3; Table 3

    10.17182/hepdata.70048.v2/t2

    Double differential cross-section for $J/\psi$-from-$b$ mesons as a function of $p_\perp$ in bins of $y$. The first uncertainties are statistical,...

  • Table 3

    Data from Table 6

    10.17182/hepdata.70048.v2/t3

    The fraction of $J/\psi$-from-$b$ mesons (in %) in bins of the $J/\psi$ $p_\perp$ and $y$. The uncertainties are statistical only....

  • Table 4

    Data from Figure 5(left); Table 7

    10.17182/hepdata.70048.v2/t4

    Differential cross-sections as a function of $p_\perp$ integrated over $y$ for prompt $J/\psi$ mesons. The first uncertainties are statistical and...

  • Table 5

    Data from Figure 5(right); Table 7

    10.17182/hepdata.70048.v2/t5

    Differential cross-sections as a function of $p_\perp$ integrated over $y$ for $J/\psi$-from-$b$ mesons. The first uncertainties are statistical and the...

  • Table 6

    Data from Figure 6(left); Table 8

    10.17182/hepdata.70048.v2/t6

    Differential cross-sections as a function of $y$ integrated over $p_\perp$ for prompt $J/\psi$ mesons. The first uncertainties are statistical and...

  • Table 7

    Data from Figure 6(right); Table 8

    10.17182/hepdata.70048.v2/t7

    Differential cross-sections as a function of $y$ integrated over $p_\perp$ for $J/\psi$-from-$b$ mesons. The first uncertainties are statistical and the...

  • Table 8

    Data from Figure 7(left); Table 9

    10.17182/hepdata.70048.v2/t8

    Ratios of differential cross-sections between measurements at $\sqrt{s} = 13$ TeV and $\sqrt{s} = 8$ TeV as a function of...

  • Table 9

    Data from Figure 7(right); Table 10

    10.17182/hepdata.70048.v2/t9

    Ratios of differential cross-sections between measurements at $\sqrt{s} = 13$ TeV and $\sqrt{s} = 8$ TeV as a function of...

  • Table 10

    Data from Figure 8(left); Table 9

    10.17182/hepdata.70048.v2/t10

    Ratios of differential cross-sections between measurements at $\sqrt{s} = 13$ TeV and $\sqrt{s} = 8$ TeV as a function of...

  • Table 11

    Data from Figure 8(right); Table 10

    10.17182/hepdata.70048.v2/t11

    Ratios of differential cross-sections between measurements at $\sqrt{s} = 13$ TeV and $\sqrt{s} = 8$ TeV as a function of...

  • Table 12

    Data from Figure 9(left); Table 9

    10.17182/hepdata.70048.v2/t12

    Ratios of differential cross-sections between measurements at $\sqrt{s} = 13$ TeV and $\sqrt{s} = 8$ TeV as a function of...

  • Table 13

    Data from Figure 9(right); Table 10

    10.17182/hepdata.70048.v2/t13

    Ratios of differential cross-sections between measurements at $\sqrt{s} = 13$ TeV and $\sqrt{s} = 8$ TeV as a function of...

Version 2 modifications: Update data sets to corrected measurements published in erratum JHEP 1705 (2017) 063.

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