title: J/Psi production in pp collisions at square root = 200 GeV at the BNL relativistic heavy ion collider.
abstract: We study J/psi production in pp collisions at BNL Relativistic Heavy Ion Collider (RHIC) within the PHENIX detector acceptance range using the color singlet and color octet mechanism which are based on perturbative QCD and nonrelativistic QCD. Here we show that the color octet mechanism reproduces the RHIC data for J/psi production in pp collisions with respect to the p(T) distribution, the rapidity distribution, and the total cross section at square root = 200 GeV. The color singlet mechanism leads to a relatively small contribution to the total cross section when compared to the octet contribution.
authors.affiliation: National Science Foundation, Arlington, Virginia 22230, USA. fcooper@nsf.gov
authors.forename: Fred
authors.initials: F
authors.lastname: Cooper
authors.forename: Ming X
authors.initials: MX
authors.lastname: Liu
authors.forename: Gouranga C
authors.initials: GC
authors.lastname: Nayak