Open access
Date
2013-06Type
- Journal Article
ETH Bibliography
yes
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Abstract
Cross sections for elastic and proton-dissociative photoproduction of J/ψ mesons are measured with the H1 detector in positron-proton collisions at HERA. The data were collected at ep centre-of-mass energies s√≈318 GeV and s√≈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<W γp <110 GeV. Differential cross sections dσ/dt, where t is the squared four-momentum transfer at the proton vertex, are measured in the range |t|<1.2 GeV2 for the elastic process and |t|<8 GeV2 for proton dissociation. The results are compared to other measurements. The W γp and t-dependences are parametrised using phenomenological fits. Show more
Permanent link
https://doi.org/10.3929/ethz-b-000070740Publication status
publishedExternal links
Journal / series
The European Physical Journal CVolume
Pages / Article No.
Publisher
SpringerOrganisational unit
08803 - Grab, Christoph (Tit.Prof.)
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ETH Bibliography
yes
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