Adler, S. S.; Afanasiev, S.; Aidala, C.; Chand, P.; Choudhury, R. K.; Dutta, D.; Kapoor, S. S.; Mohanty, A. K.; and others (BARC)
Source
Physical Review Letters, 2004. Vol. 925 (5): pp. 518021-518026
ABSTRACT
J/ψ production has been measured in proton-proton collisions at √s= 200 GeV over a wide rapidity and transverse momentum range by the PHENIX experiment at RHIC. Distributions of the rapidity and transverse momentum, along with measureme nts of the mean transverse momentum and total production cross section are presented and compare ed to available theoretical calculations.The total J/ψ cross section is 3.99±0.61(stat)±0.58(sys)±0.40 (abs) μb. The mean transverse momentum is 1.80±0.23(stat)±0.16(sys) GeV/c.