Measurement of B$^0_\mathrm{s}$ meson production in pp and PbPb collisions at $\sqrt{s_\mathrm{NN}} =$ 5.02 TeV

The CMS collaboration
Phys.Lett.B 796 (2019) 168-190, 2019.

Abstract
The production cross sections of B$^0_\mathrm{s}$ mesons and charge conjugates are measured in proton-proton (pp) and PbPb collisions via the exclusive decay channel B$^0_\mathrm{s}$ $\to$ $\mu^+\mu^-$K$^+$K$^-$ at a centre-of-mass energy of 5.02 TeV per nucleon pair and within the rapidity range $|y|$ $\lt$ 2.4 using the CMS detector at the LHC. The pp measurement is performed as a function of transverse momentum (p$_\mathrm{T}$) of the B$^0_\mathrm{s}$ meson in the range of 7 to 50 GeV/$c$ and is compared to the predictions of perturbative QCD calculations. The B$^0_\mathrm{s}$ production yield in PbPb collisions is measured in two p$_\mathrm{T}$ intervals, 7 to 15 and 15 to 50 GeV/$c$, and compared to the yield in pp collisions in the same kinematic region. The nuclear modification factor ($R_\mathrm{AA}$) is found to be 1.5 $\pm$ 0.6 (stat) $\pm$ 0.5 (syst) for 7-15 GeV/$c$, and 0.87 $\pm$ 0.30 (stat) $\pm$ 0.17 (syst) for 15-50 GeV/$c$, respectively. Within current uncertainties, the results are consistent with models of strangeness enhancement and a suppression as observed for the B$^+$ mesons.

  • Table 1

    Data from Fig. 3 in https://arxiv.org/abs/1810.03022

    10.17182/hepdata.85629.v1/t1

    The $B^{0}_{s}$ p$_T$-differential production cross section in pp collisions at $\sqrt(s_{_{NN}})=5.02$TeV, in three p$_T$ intervals from 7 to 50GeV/c. The...

  • Table 2

    Data from Fig. 4 (left panel) in https://arxiv.org/abs/1810.03022

    10.17182/hepdata.85629.v1/t2

    The $B^{0}_{s}$ p$_T$-differential production cross section in pp collisions at $\sqrt(s_{_{NN}})=5.02$TeV, in two p$_T$ intervals from 7 to 50GeV/c. The...

  • Table 3

    Data from Fig. 4 (left panel) in https://arxiv.org/abs/1810.03022

    10.17182/hepdata.85629.v1/t3

    The $B^{0}_{s}$ p$_T$-differential yield scaled by $\rm{T_{AA}}$ in PbPb collisions at $\sqrt(s_{_{NN}})=5.02$TeV, in two p$_T$ intervals from 7 to 50GeV/c....

  • Table 4

    Data from Fig. 4 (right panel) in https://arxiv.org/abs/1810.03022

    10.17182/hepdata.85629.v1/t4

    The R$_{AA}$ of $B^{0}_{s}$ measured in PbPb collisions at $\sqrt(s_{_{NN}})=5.02$TeV from 7 to 50GeV/c. The global uncertainty comprises the uncertainties...

  • Table 5

    Data from Fig. 5 in https://arxiv.org/abs/1810.03022

    10.17182/hepdata.85629.v1/t5

    The R$_{AA}$ ratio between $B^{0}_{s}$ and $B^{+}$ mesons measured in PbPb collisions at $\sqrt(s_{_{NN}})=5.02$TeV from 7 to 50GeV/c.

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