none40The exclusive electroproduction of J /ψ mesons, ep → epJ /ψ , has been studied with the ZEUS detector at HERA for virtualities of the exchanged photon in the ranges 0.15 < Q2 < 0.8 GeV2 and 2 < Q2 < 100 GeV2 using integrated luminosities of 69 and 83 pb−1, respectively. The photon– proton centre-of-mass energy was in the range 30 < W < 220 GeV and the squared four-momentum transfer at the proton vertex2|t| < 1 GeV2. The cross sections and decay angular distributions are presented as functions of Q , W and t. The effective parameters of the pomeron trajectory are in agreement with those found in J/ψ photoproduction. The spin-density matrix elements, calculated from the decay angular distributions,...
The exclusive photoproduction of J/psi mesons, gammap --> J/psip, has been studied in ep collisions ...
The exclusive photoproduction of J/ψ mesons, γp → J/ψp, has been studied in ep collisions with the Z...
40 pages, 14 figures, 15 tables - H1Cross sections for elastic production of J/Psi mesons in photopr...
The exclusive electroproduction of J /ψ mesons, ep → epJ /ψ , has been studied with ...
The exclusive electroproduction of J/Ï mesons, epâepJ/Ï, has been studied with the ZEUS detector at ...
The exclusive electroproduction of J = mesons, ep! ep J = , has been studied with the ZEUS detector ...
The exclusive photoproduction of J/#psi# mesons, #gamma#p #-># J/#psi#p, has been studied in ep c...
The exclusive photoproduction of J/psi mesons, gammap --> J/psip, has been studied in ep collisions ...
The exclusive photoproduction of J/ψ mesons, γp → J/ψp, has been studied in ep collisions with the Z...
40 pages, 14 figures, 15 tables - H1Cross sections for elastic production of J/Psi mesons in photopr...
The exclusive electroproduction of J /ψ mesons, ep → epJ /ψ , has been studied with ...
The exclusive electroproduction of J/Ï mesons, epâepJ/Ï, has been studied with the ZEUS detector at ...
The exclusive electroproduction of J = mesons, ep! ep J = , has been studied with the ZEUS detector ...
The exclusive photoproduction of J/#psi# mesons, #gamma#p #-># J/#psi#p, has been studied in ep c...
The exclusive photoproduction of J/psi mesons, gammap --> J/psip, has been studied in ep collisions ...
The exclusive photoproduction of J/ψ mesons, γp → J/ψp, has been studied in ep collisions with the Z...
40 pages, 14 figures, 15 tables - H1Cross sections for elastic production of J/Psi mesons in photopr...