J/psi production versus transverse momentum and rapidity in p+p collisions at root s=200 GeV
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Abstract
J/psi production in p+p collisions at root s=200 GeV has been measured by the PHENIX experiment at the BNL Relativistic Heavy Ion Collider over a rapidity range of -2.2 < y < 2.2 and a transverse momentum range of 0 < p(T)< 9 GeV/c. The size of the present data set allows a detailed measurement of both the p(T) and the rapidity distributions and is sufficient to constrain production models. The total cross section times the branching ratio is B-ll sigma(J/psi)(pp)=178 +/- 3(stat)+/- 53(sys)+/- 18(norm) nb.
Comments
This article is published as Adare, A., S. Afanasiev, C. Aidala, N. N. Ajitanand, Y. Akiba, H. Al-Bataineh, J. Alexander et al. "J/ψ Production versus Transverse Momentum and Rapidity in p+ p Collisions at s= 200 GeV." Physical review letters 98, no. 23 (2007): 232002. DOI: 10.1103/PhysRevLett.98.232002. Posted with permission.