Abstract
Results are presented on ρ + ω, (latin small letter o with stroke) and J/Ψ production in p-W and 32S-W interactions at 200 GeV/c/nucleon measured via the dimuon decay in a large kinematic region. The data are normalized to the charged particle multiplicity in the same rapidity interval. They have been collected using the HELIOS/3 muon spectrometer at the CERN SPS. The ratio Bσ(latin small letter o with stroke)/ (Bσρ, + Bσω), where B is the relevant resonance μμ branching fraction, increases between proton and sulphur projectiles, and is somewhat enhanced going from peripheral to central S-W interactions. This results from an increase in the number of produced (latin small letter o with stroke)'s per charged particle. The ratio is measured in different intervals of pΤ and rapidity. It is not clearly dependent on pΤ, but is larger at higher rapidities. J/Ψ production, likewise normalized to charged multiplicity, is significantly lower in S-W compared to p-W interactions.
Original language | English |
---|---|
Pages (from-to) | 63-75 |
Number of pages | 13 |
Journal | European Physical Journal C |
Volume | 5 |
Issue number | 1 |
DOIs | |
State | Published - 1998 |