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Study of $\Upsilon$ production in $p$Pb collisions at $\sqrt{s_{NN}}=8.16$ TeV

The LHCb collaboration
JHEP 11 (2018) 194, 2018.

Abstract (data abstract)
CERN-LHC. The production of $\Upsilon(nS)$ mesons ($n=1,2,3$) in $p$Pb and Pb$p$ collisions at a centre-of-mass energy per nucleon pair $\sqrt{s_{NN}}=8.16$ TeV is measured by the LHCb experiment, using a data sample corresponding to an integrated luminosity of 31.8 $nb^{-1}$. The $\Upsilon(nS)$ mesons are reconstructed through their decays into two opposite-sign muons. The measurements comprise the differential production cross-sections of the $\Upsilon(1S)$ and $\Upsilon(2S)$ states, their forward-to-backward ratios and nuclear modification factors, performed as a function of the transverse momentum p_{T} and rapidity in the nucleon-nucleon centre-of-mass frame $y^*$ of the $\Upsilon(nS)$ states, in the kinematic range $p_{T}<25$ GeV$/c$ and $1.5<y^*<4.0$ ($-5.0<y^*<-2.5$) for $p$Pb (Pb$p$) collisions. In addition, production cross-sections for $\Upsilon(3S)$ are measured integrated over phase space and the production ratios between all three $\Upsilon(nS)$ states are determined.

  • Table 1

    Data from Table 4, Figure 3 (left)

    10.17182/hepdata.93070.v1/t1

    $\Upsilon(1S)$ production cross-section in $p$Pb, as a function of $p_{T}$ and $y*$. The uncertainty is the sum in quadrature of...

  • Table 2

    Data from Table 5, Figure 3 (right)

    10.17182/hepdata.93070.v1/t2

    $\Upsilon(1S)$ production cross-section in Pb$p$, as a function of $p_{T}$ and $y^*$. The uncertainty is the sum in quadrature of...

  • Table 3

    Data from Table 6, Figure 5 (top)

    10.17182/hepdata.93070.v1/t3

    $\Upsilon(1S)$ production cross-section in $p$Pb and Pb$p$, as a function of $p_{T}$. The uncertainty is the sum in quadrature of...

  • Table 4

    Data from Table 7, Figure 4 (left)

    10.17182/hepdata.93070.v1/t4

    $\Upsilon(1S)$ production cross-section in $p$Pb and Pb$p$, as a function of $y^*$. The uncertainty is the sum in quadrature of...

  • Table 5

    Data from Table 8, Figure 5 (bottom)

    10.17182/hepdata.93070.v1/t5

    $\Upsilon(2S)$ production cross-section in $p$Pb and Pb$p$, as a function of $p_{T}$. The uncertainty is the sum in quadrature of...

  • Table 6

    Data from Table 9, Figure 4 (right)

    10.17182/hepdata.93070.v1/t6

    $\Upsilon(2S)$ production cross-section in $p$Pb and Pb$p$, as a function of $y^*$. The uncertainty is the sum in quadrature of...

  • Table 7

    Data from Table 10, Figure 5

    10.17182/hepdata.93070.v1/t7

    Scaled $pp$ differential cross-section in $p_{T}$ at $\sqrt{s_{NN}}=8.16$ TeV. The first uncertainty is statistical, the second is systematic, which includes...

  • Table 8

    Data from Table 11, Figure 4

    10.17182/hepdata.93070.v1/t8

    Scaled $pp$ differential cross-section in $y$ at $\sqrt{s_{NN}}=8.16$ TeV. The first uncertainty is statistical, the second is systematic, which includes...

  • Table 9

    Data from Table 12, Figure 7 (top)

    10.17182/hepdata.93070.v1/t9

    $\Upsilon(1S)$ nuclear modification factor, $R_{p{\rm Pb}}^{\Upsilon(1S)}$, in $p$Pb and Pb$p$ as a function of $p_{T}$ integrated over $y^*$ in the...

  • Table 10

    Data from Table 13, Figure 6 (top)

    10.17182/hepdata.93070.v1/t10

    $\Upsilon(1S)$ nuclear modification factor, $R_{p{\rm Pb}}^{\Upsilon(1S)}$, in $p$Pb and Pb$p$ as a function of $y^*$ integrated over $p_{T}$ in the...

  • Table 11

    Data from Table 14, Figure 7 (bottom)

    10.17182/hepdata.93070.v1/t11

    $\Upsilon(2S)$ nuclear modification factor, $R_{p{\rm Pb}}^{\Upsilon(2S)}$, in $p$Pb and Pb$p$ as a function of $p_{T}$ integrated over $y^*$ in the...

  • Table 12

    Data from Table 15, Figure 6 (bottom)

    10.17182/hepdata.93070.v1/t12

    $\Upsilon(2S)$ nuclear modification factor, $R_{p{\rm Pb}}^{\Upsilon(2S)}$, in $p$Pb and Pb$p$ as a function of $y^*$ integrated over $p_{T}$ in the...

  • Table 13

    Data from Table 16, Figure 8 (left)

    10.17182/hepdata.93070.v1/t13

    $\Upsilon(1S)$ forward-to-backward ratio, $R_{{\rm FB}}^{\Upsilon(1S)}$, as a function of $p_{T}$ integrated over $\vert y^* \vert$ in the range $2.5 <...

  • Table 14

    Data from Table 17, Figure 8 (right)

    10.17182/hepdata.93070.v1/t14

    $\Upsilon(1S)$ forward-to-backward ratio, $R_{{\rm FB}}^{\Upsilon(1S)}$, as a function of $\vert y^* \vert$ integrated over $p_{T}$ in the range $0 <...

  • Table 15

    Data from Table 18, Figure 10 (top)

    10.17182/hepdata.93070.v1/t15

    $\Upsilon(2S)$ to $\Upsilon(1S)$ ratio, in $p$Pb and Pb$p$ as a function of $p_{T}$ integrated over $y^*$ in the range $1.5...

  • Table 16

    Data from Table 19, Figure 10 (bottom)

    10.17182/hepdata.93070.v1/t16

    $\Upsilon(2S)$ to $\Upsilon(1S)$ ratio, in $p$Pb and Pb$p$ as a function of $y^*$ integrated over $p_{T}$ in the range $0...

  • Table 17

    Data from Table 20, Figure 12

    10.17182/hepdata.93070.v1/t17

    $\Upsilon(1S)$ to non-prompt $J/\psi$, in $p$Pb and Pb$p$ as a function of $y^*$ integrated over $p_{T}$ in the range $0...

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