Journal
EUROPEAN PHYSICAL JOURNAL C
Volume 73, Issue 6, Pages -Publisher
SPRINGER
DOI: 10.1140/epjc/s10052-013-2466-y
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Funding
- DESY directorate
- Initiative and Networking Fund of the Helmholtz Association (HGF) [VH-NG-401, S0-072]
- Bundesministerium fur Bildung und Forschung, FRG [05H09GUF, 05H09VHC, 05H09VHF, 05H16PEA]
- UK Science and Technology Facilities Council
- UK Particle Physics and Astronomy Research Council
- FNRS-FWO-Vlaanderen
- IISN-IIKW
- IWT
- Interuniversity Attraction Poles Programme, Belgian Science Policy
- Polish Ministry of Science and Higher Education [DPN/N168/DESY/2009]
- VEGA SR [2/7062/ 27]
- Swedish Natural Science Research Council
- Ministry of Education of the Czech Republic [LC527, INGO-LA09042, MSM0021620859]
- Swiss National Science Foundation
- CONACYT, Mexico [48778-F]
- Russian Foundation for Basic Research (RFBR) [1329.2008.2]
- Romanian National Authority for Scientific Research [PN 09370101]
- Ministry of Science of Montenegro [05-1/3-3352]
- Science and Technology Facilities Council [ST/K001418/1, ST/M001474/1] Funding Source: researchfish
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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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