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Elastic and Proton-Dissociative Photoproduction of J/psi Mesons at HERA

The H1 collaboration
Eur.Phys.J. C73 (2013) 2466, 2013

Abstract (data abstract)
DESY-HERA. Cross sections for elastic and proton-dissociative photoproduction of J/psi mesons are measured with the H1 detector in positron-proton collisions at HERA. The data were collected at -of-mass energies sqrt{s} approx 318 GeV and sqrt{s} approx 225 GeV, corresponding to integrated luminosities of L = 130 pb^{-1} and L = 10.8 pb^{-1}, respectively. The cross sections are measured as a function of the photon-proton centre-of-mass energy in the range 25< Wgp < 110 GeV. Differential cross sections mathrm{d}sigma / mathrm{d}t where the squared four-momentum transfer at the proton vertex, are measured in the range 0t| < 1.2 , gevsq the elastic process and 0t| < 8 , gevsq proton dissociation. The results are compared to other measurements. The Wgp 0dependences are parametrised using phenomenological fits.

  • Table 1

    Data from T 4,F 5

    10.17182/hepdata.66507.v1/t1

    The elastic photoproduction cross section derived from the high-energy data set as a function of the photon-proton centre-of-mass energy W....

  • Table 2

    Data from T 4,F 5

    10.17182/hepdata.66507.v1/t2

    The proton-dissociative photoproduction cross section derived from the high-energy data set as a function of the photon-proton centre-of-mass energy W....

  • Table 3

    Data from T 4,F 5

    10.17182/hepdata.66507.v1/t3

    The elastic photoproduction cross section derived from the low-energy data set as a function of the photon-proton centre-of-mass energy W....

  • Table 4

    Data from T 4,F 5

    10.17182/hepdata.66507.v1/t4

    The proton-dissociative photoproduction cross section derived from the low-energy data set as a function of the photon-proton centre-of-mass energy W....

  • Table 5

    Data from T 5,F 6

    10.17182/hepdata.66507.v1/t5

    The elastic photoproduction differential cross section derived from the high-energy data set as a function of the negative squared momentum...

  • Table 6

    Data from T 5,F 6

    10.17182/hepdata.66507.v1/t6

    The proton-dissociative photoproduction differential cross section derived from the high-energy data set as a function of the negative squared momentum...

  • Table 7

    Data from T 6,F 6

    10.17182/hepdata.66507.v1/t7

    The elastic photoproduction differential cross section derived from the low-energy data set as a function of the negative squared momentum...

  • Table 8

    Data from T 6,F 6

    10.17182/hepdata.66507.v1/t8

    The proton-dissociative photoproduction differential cross section derived from the low-energy data set as a function of the negative squared momentum...

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