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Title
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Elastic and proton-dissociative photoproduction of J/ mesons at HERA
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Author
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Institution/Organisation
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H1 Collaboration
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Abstract
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| 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 ep centre-of-mass energies root s approximate to 318 GeV and root s approximate to 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-gamma p < 110 GeV. Differential cross sections d sigma/dt, where t is the squared four-momentum transfer at the proton vertex, are measured in the range vertical bar t vertical bar < 1.2 GeV2 for the elastic process and vertical bar t vertical bar < 8 GeV2 for proton dissociation. The results are compared to other measurements. The W-gamma p and t-dependences are parametrised using phenomenological fits. |
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Language
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English
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Source (journal)
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European physical journal : C : particles and fields. - Berlin
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Publication
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Berlin
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2013
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ISSN
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1434-6044
1434-6052
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DOI
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10.1140/EPJC/S10052-013-2466-Y
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Volume/pages
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73
:6
(2013)
, p. 1-17
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Article Reference
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2466
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ISI
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000321855400021
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Medium
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E-only publicatie
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Full text (Publisher's DOI)
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Full text (open access)
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