PS06 High Energy Nuclear Physics
Measurement of J/ψ production in proton-proton collisions by the PHENIX experiment
University of New Mexico, Albuquerque, NM 87131, USA
Accepted: 1 February 2004
Published online: 26 February 2004
The PHENIX experiment at the Relativistic Heavy Ion Collider has measured J/ψ production in proton-proton collisions at = 200 GeV using data from the 2001–2002 collider run. Distributions of rapidity and transverse momentum are presented and compared with theoretical predictions. The total cross section and mean p T are calculated and compared to fixed-target results. The total J/ψ cross section is 4.0 ± 0.6(stat) ± 0.6(sys) ± 0.4(abs) μb. The mean p T is 1.80 ± 0.23(stat) ± 0.16(sys) GeV/c.
PACS: 25.75.Dw Particle and resonance production
© Società Italiana di Fisica, Springer-Verlag, 2004