The photoproduction reaction gamma p -> mu+ mu- p has been studied in ep interactions using the ZEUS detector at HERA. The data sample corresponds to an integrated luminosity of 43.2 pb^{-1}. The Upsilon meson has been observed in photoproduction for the first time. The sum of the products of the elastic Upsilon(1S), Upsilon(2S), Upsilon(3S) photoproduction cross sections with their respective branching ratios is determined to be 13.3 +- 6.0(stat.)^{+2.7}_{-2.3}(syst.) pb at a mean photon-proton centre of mass energy of 120 GeV. The cross section is above the prediction of a perturbative QCD model
Cross sections for elastic photoproduction of J/#psi# and #UPSILON# mesons are presented. For J/#psi...
Cross sections for elastic photoproduction of J/Psi and Upsilon mesons are presented. For J/Psi meso...
The production of φ mesons in the reaction e + p → e + φp ( gf → K + K − ) at a median Q 2 of 10 −4 ...
The photoproduction reaction gamma p --> mu(+)mu(-) p has been studied in ep interactions using the ...
The photoproduction reaction #gamma#p #-># #mu#"+#mu#"-p has been studied in ep interac...
The photoproduction reaction γp→ μ + μ − p has been studied in ep interactions using the ZEUS detect...
The photoproduction reaction γp → μ+ μ-p has been studied in ep interactions using the ZEUS detector...
The exclusive photoproduction reaction gamma p --> Upsilon p has been studied with the ZEUS experime...
he exclusive photoproduction reaction γ p → Υ{hooked} p has been studied with the ZEUS experiment in...
The exclusive photoproduction reaction gamma p -> Upsilon(1S) p has been studied with the ZEUS detec...
DESY-HERA. Measurement of the cross sections for elastic photoproduction ofJ/PSI and UPSILON mesons....
The exclusive photoproduction reaction gamma p --> Upsilon p has been studied with the ZEUS experime...
The exclusive photoproduction reaction gamma p -> gamma(1S)p has been studied with the ZEUS detector...
The central aim of this thesis has been the measurement of the elastic process ep #-># eJ/#psi#p,...
The production of φ mesons in the reaction e+p → e+φp (φ → K+K-) at a median Q2 of 10-4 GeV2 has bee...
Cross sections for elastic photoproduction of J/#psi# and #UPSILON# mesons are presented. For J/#psi...
Cross sections for elastic photoproduction of J/Psi and Upsilon mesons are presented. For J/Psi meso...
The production of φ mesons in the reaction e + p → e + φp ( gf → K + K − ) at a median Q 2 of 10 −4 ...
The photoproduction reaction gamma p --> mu(+)mu(-) p has been studied in ep interactions using the ...
The photoproduction reaction #gamma#p #-># #mu#"+#mu#"-p has been studied in ep interac...
The photoproduction reaction γp→ μ + μ − p has been studied in ep interactions using the ZEUS detect...
The photoproduction reaction γp → μ+ μ-p has been studied in ep interactions using the ZEUS detector...
The exclusive photoproduction reaction gamma p --> Upsilon p has been studied with the ZEUS experime...
he exclusive photoproduction reaction γ p → Υ{hooked} p has been studied with the ZEUS experiment in...
The exclusive photoproduction reaction gamma p -> Upsilon(1S) p has been studied with the ZEUS detec...
DESY-HERA. Measurement of the cross sections for elastic photoproduction ofJ/PSI and UPSILON mesons....
The exclusive photoproduction reaction gamma p --> Upsilon p has been studied with the ZEUS experime...
The exclusive photoproduction reaction gamma p -> gamma(1S)p has been studied with the ZEUS detector...
The central aim of this thesis has been the measurement of the elastic process ep #-># eJ/#psi#p,...
The production of φ mesons in the reaction e+p → e+φp (φ → K+K-) at a median Q2 of 10-4 GeV2 has bee...
Cross sections for elastic photoproduction of J/#psi# and #UPSILON# mesons are presented. For J/#psi...
Cross sections for elastic photoproduction of J/Psi and Upsilon mesons are presented. For J/Psi meso...
The production of φ mesons in the reaction e + p → e + φp ( gf → K + K − ) at a median Q 2 of 10 −4 ...