Measurement of $J/\psi$ production in $pp$ collisions at $\sqrt{s}=2.76$ TeV

The LHCb collaboration
JHEP 1302 (2013) 041, 2013

Abstract (data abstract)
CERN-LHC. The production of $J/\psi$ mesons is studied with the LHCb detector using data from pp collisions at $\sqrt{s}$ = 2.76 TeV corresponding to an integrated luminosity of 71 nb$^{-1}$. The differential cross-section for inclusive $J/\psi$ production is measured as a function of its transverse momentum $p_T$. The cross-section in the fiducial region $0<p_T<12$ GeV/c and rapidity $2.0<y<4.5$ is measured to be $(5.6 \pm 0.1(stat) \pm 0.4 (syst))~ \mu$b, with the assumption of unpolarised $J/\psi$ production. The fraction of $J/\psi$ production from b-hadron decays is measured to be $(7.1 \pm 0.6 (stat) \pm 0.7 (syst))~\%$.

  • Table 1

    Data from Figure 4; Table 3


    Differential cross-section $d\sigma/dp_T$ at $\sqrt{s}$ = 2.76 TeV for inclusive $J/\psi$ production in bins of $p_T$. The rapidity range covered...

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