Elastic Photoproduction of J/psi and Upsilon Mesons at HERA
| dc.creator | H1 Collaboration | |
| dc.creator | Adloff, C. | |
| dc.date | 2000-03-16 | |
| dc.date.accessioned | 2026-07-07T11:46:31Z | |
| dc.date.available | 2026-07-07T11:46:31Z | |
| dc.description | Cross sections for elastic photoproduction of J/Psi and Upsilon mesons are presented. For J/Psi mesons the dependence on the photon-proton centre-of-mass energy W_gammap is analysed in an extended range with respect to previous measurements of 26<=W_gammap<= 285 GeV. The measured energy dependence is parameterized as sigma_gammap proportional W_gammap^delta with delta=0.83+-0.07. The differential cross section dsigma/dt for J/Psi mesons is derived, its dependence on W_gammap and on t is analysed and the effective trajectory (in terms of Regge theory) is determined to be alpha(t)=(1.27+-0.05)+(0.08+-0.17)*t/GeV^2. Models based on perturbative QCD and on pomeron exchange are compared to the data. | |
| dc.description | 18 pages, 6 figures and 3 tables | |
| dc.identifier | https://arxiv.org/abs/hep-ex/0003020 | |
| dc.identifier | http://arxiv.org/abs/hep-ex/0003020 | |
| dc.identifier | Phys.Lett.B483:23-35,2000 | |
| dc.identifier | doi:10.1016/S0370-2693(00)00530-X | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/202251 | |
| dc.subject | High Energy Physics - Experiment | |
| dc.title | Elastic Photoproduction of J/psi and Upsilon Mesons at HERA | |
| dc.type | text |