The production of φ mesons in the reaction e + p → e + φp ( φ → K + K − ), for 7 < Q 2 < 25 GeV 2 and virtual photon-proton centre of mass energies ( W ) in the range 42–134 GeV, has been studied with the ZEUS detector at HERA. When compared to lower energy data at similar Q 2 , the results show that the γ ∗ p → φp cross section rises strongly with W . This behaviour is similar to that previously found for the γ ∗ p → ϱ 0 p cross section. This strong dependence cannot be explained by production through soft pomeron exchange. It is, however, consistent with perturbative QCD expectations, where it reflects the rise of the gluon momentum density in the proton at small x . The ratio of σ(φ) σ(ϱ 0 ) , which has previously been determined by ZEUS...
The reaction γ p → J/ψ p has been studied in ep interactions using the ZEUS detector at HERA. The cr...
The exclusive photoproduction reaction gamma p -> gamma p has been studied with the ZEUS experiment ...
Events with a final-state proton carrying a large fraction of the proton-beam momentum, x_L>0.6, and...
The production of φ mesons in the reaction e + p → e + φp ( φ → K + K − ), for 7 < Q 2 < 25 GeV 2 an...
The production of φ mesons in the reaction e+p → e+φp (φ → K+K-), for 7 < Q2 < 25 GeV2 and for...
The production of #phi# mesons in the reaction e"+p#->#e"+#phi#p (#phi##->#K"+K...
The production of phi mesons in the reaction e(+)p --> e(+)phi p (phi --> K+K-), for 7 phi p cross ...
The production of phi mesons in the reaction e(+)p --> e(+)phi p (phi --> K+K-), for 7 phi p cross ...
The production of φ mesons in the reaction e + p → e + φp ( gf → K + K − ) at a median Q 2 of 10 −4 ...
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...
Exclusive ρ0 electroproduction at HERA has been studied with the ZEUS detector using 120 pb-1 of int...
The exclusive deep inelastic electroproduction of psi(2S) and J/psi (1S) at an ep centre-of-mass ene...
This paper reports the cross section measurements for the process ep → e J/ψ p for Q 2 < 4 GeV 2 at ...
The exclusive deep inelastic electroproduction of ψ (2S) and J/ψ (1S) at an ep centre-of-mass energy...
The semi-inclusive reaction e+ p -> e+ X p was studied with the ZEUS detector at HERA using an integ...
The reaction γ p → J/ψ p has been studied in ep interactions using the ZEUS detector at HERA. The cr...
The exclusive photoproduction reaction gamma p -> gamma p has been studied with the ZEUS experiment ...
Events with a final-state proton carrying a large fraction of the proton-beam momentum, x_L>0.6, and...
The production of φ mesons in the reaction e + p → e + φp ( φ → K + K − ), for 7 < Q 2 < 25 GeV 2 an...
The production of φ mesons in the reaction e+p → e+φp (φ → K+K-), for 7 < Q2 < 25 GeV2 and for...
The production of #phi# mesons in the reaction e"+p#->#e"+#phi#p (#phi##->#K"+K...
The production of phi mesons in the reaction e(+)p --> e(+)phi p (phi --> K+K-), for 7 phi p cross ...
The production of phi mesons in the reaction e(+)p --> e(+)phi p (phi --> K+K-), for 7 phi p cross ...
The production of φ mesons in the reaction e + p → e + φp ( gf → K + K − ) at a median Q 2 of 10 −4 ...
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...
Exclusive ρ0 electroproduction at HERA has been studied with the ZEUS detector using 120 pb-1 of int...
The exclusive deep inelastic electroproduction of psi(2S) and J/psi (1S) at an ep centre-of-mass ene...
This paper reports the cross section measurements for the process ep → e J/ψ p for Q 2 < 4 GeV 2 at ...
The exclusive deep inelastic electroproduction of ψ (2S) and J/ψ (1S) at an ep centre-of-mass energy...
The semi-inclusive reaction e+ p -> e+ X p was studied with the ZEUS detector at HERA using an integ...
The reaction γ p → J/ψ p has been studied in ep interactions using the ZEUS detector at HERA. The cr...
The exclusive photoproduction reaction gamma p -> gamma p has been studied with the ZEUS experiment ...
Events with a final-state proton carrying a large fraction of the proton-beam momentum, x_L>0.6, and...