• Browse all
Measurement of J/ψ and ψ(2S) Prompt Double-Differential Cross Sections in pp Collisions at $\sqrt{s}$=7  TeV

The CMS collaboration
Phys.Rev.Lett. 114 (2015) 191802, 2015

Abstract (data abstract)
CERN-LHC. The double-differential cross sections of promptly produced J/psi and psi(2S) mesons are measured in proton-proton collisions at sqrt(s) = 7 TeV, as function of transverse momentum pT and absolute rapidity |y|. The analysis uses J/psi and psi(2S) dimuon samples collected in 2011 by the CMS experiment at the LHC, corresponding to integrated luminosities of 4.55 and 4.9 fb^-1, respectively. The results are based on a two-dimensional analysis of the dimuon invariant mass and decay length, and extend to pT = 120 and 100 GeV for the J/psi and psi(2S), respectively, when integrated over the interval |y| < 1.2. The ratio of the psi(2S) over J/psi cross sections is also reported for |y| < 1.2, over the range 10 < pT < 100 GeV. These are the highest-pT values for which the cross sections and ratios have been measured. The tables below list the results of J/psi and psi(2S) differential cross section times dimuon branching fraction B in four rapidity bins for the unpolarized scenario, the unpolarized differential cross sections times B in the integrated rapidity range |y| < 1.2 with the corresponding scaling factors needed to obtain the cross sections for different polarization scenarios and the ratio of the psi(2S) to J/psi cross sections for the integrated rapidity range |y| < 1.2.

  • Table 1

    Data from Table 1

    10.17182/hepdata.66886.v1/t1

    J/psi double-differential cross section times branching fraction assuming unpolarized production as a function of pT and y for 0.0 <...

  • Table 2

    Data from Table 2

    10.17182/hepdata.66886.v1/t2

    psi(2S) double-differential cross section times branching fraction assuming unpolarized production as a function of pT and y for 0.0 <...

  • Table 3

    Data from Table 3

    10.17182/hepdata.66886.v1/t3

    J/psi double-differential cross section times branching fraction and the corresponding scaling factors to obtain the cross sections for different polarization...

  • Table 4

    Data from Table 4

    10.17182/hepdata.66886.v1/t4

    psi(2S) double-differential cross section times branching fraction and the corresponding scaling factors to obtain the cross sections for different polarization...

  • Table 5

    Data from Table 5

    10.17182/hepdata.66886.v1/t5

    Ratio of psi(2S) to J/psi differential cross section times branching fractions assuming unpolarized productions as a function of pT for...

Loading Data...