J. Gago

J/ψ, ψ′ and Drell-Yan production in S-U interactions at 200 GeV per nucleon

Abstract A detailed study of J/ ψ , ψ ′ and Drell-Yan production in S-U collisions has been performed by experiment NA38 at the CERN SPS. This paper presents production cross sections and their centrality dependence, based on the largest sample of S-U events collected by the experiment.

Charmonia production in 450-GeV/c proton induced reactions

Absolute jpsi and psip production cross sections have been measured at the CERN SPS, with 450~GeV/

J/ψ and muon-pair cross-sections in proton-nucleus and nucleus-nucleus collisions at 200 GeV per nucleon

c

φ, ϱ, and ω production in pU, OU and SU reactions at 200 GeV per nucleon

protons incident on a set of C, Al, Cu and W targets. Complementing these values with the results obtained by experiment NA51, which used the same beam and detector with H and D targets, we establish a coherent picture of charmonia production in proton-induced reactions at SPS energies. In particular, we show that the scaling of the jpsi cross section with the mass number of the target, A, is well described as A

Initial state interactions and J/ψ production in nucleus-nucleus collisions

^alpha

Production of ϱ + ω and Φ in p-W and SU collisions at 200 GeV/nucleon

with

Muon pair and vector meson cross-sections in p-W and SU collisions at 200 GeV/nucleon

alpha^psi=0.919pm0.015

Jψ, ψ′ and muon pair production in p-W and S-U collisions

. The ratio between the jpsi and psip yields, in our kinematical window, is found to be independent of A, with

Muon pair production in heavy ion interactions at 200 GeV per nucleon

alpha^{psi^prime}-alpha^{psi}=0.014pm0.0 11

ψi and Jψ production in p-U and S-U collisions at 200 GeVnucleon

.