1. Comprehensive Description of J/ψ Production in Proton-Proton Collisions at Collider Energies.
- Author
-
Yan-Qing Ma and Venugopalan, Raju
- Subjects
- *
PROTON-proton interactions , *COLLISIONS (Nuclear physics) , *COLLIDERS (Nuclear physics) , *NONRELATIVISTIC quantum mechanics , *PARTICLE accelerators - Abstract
We employ a small x color glass condensate (CGC)+ nonrelativistic QCD (NRQCD) formalism to compute J/ψ production at low p┴ in proton-proton collisions at collider energies. Very good agreement is obtained for total cross sections, rapidity distributions, and low momentum p┴ distributions. Similar agreement is obtained for ψ' production. We observe an overlap region in p┴ where our results match smoothly to those obtained in a next-to-leading order collinearly factorized NRQCD formalism. The relative contribution of color singlet and color octet contributions can be quantified in the CGC + NRQCD framework, with the former contributing approximately 10% of the total cross section. [ABSTRACT FROM AUTHOR]
- Published
- 2014
- Full Text
- View/download PDF