J/ΨProduction in pp Collisions at \sqrt s = 200 GeV at RHIC

Details J/ΨProduction in pp Collisions at \sqrt s = 200 GeV at RHIC J/ΨProduction in pp Collisions at \sqrt s = 200 GeV at RHIC

2004-02-23

arxiv.org/abs/hep-ph/0402219v2

Phys.Rev.Lett.93:171801,2004

Physics

High Energy Physics

High Energy Physics - Phenomenology

Final Version, To Appear in Phys. Rev. Lett

Scientific paper

10.1103/PhysRevLett.93.171801

We study J/\psi production in pp collisions at RHIC within the PHENIX detector acceptance range using the color singlet and color octet mechanism which are based on pQCD and NRQCD. 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 \sqrt s = 200 GeV. The color singlet mechanism leads to a relatively small contribution to the total cross section when compared to the octet contribution.

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