1995/11/30 by Peter J. Cho, Peter Cho, Adam K. Leibovich · 8 citations
Physics and Astronomy · #High-Energy Particle Collisions Research #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions #hep-ph
paper · pdf · doi:10.1103/physrevd.53.6203
published as Phys.Rev. D53 (1996) 6203-6217 · 27 pages, harvmac, 9 uuencoded figures. Section in original version of this article which discussed quarkonia spin alignment has been removed
arxiv created 1996/04/09 · openalex publication_date 1996/06/01 · arxiv updated 2009/11/30 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
We calculate the lowest order hadronic cross sections for producing colored heavy quark-antiquark pairs in L=S=0 and L=S=1 configurations. Such QQ[1S0(8)] and QQ[3PJ(8)] states hadronize into \ensuremathψQ quarkonia at the same order in the NRQCD velocity expansion as previously considered QQ[3S1(8)] pairs. Their contributions to prompt \ensuremathψ and \ensuremathΥ production at the Fermilab Tevatron bring the shapes of theoretical transverse momentum distributions into line with recent CDF measurements. We find that the best fit values for the linear combinations of QQ[1S0(8)] and QQ[3PJ(8)] long distance matrix elements which can be extracted from the data are generally consistent with NRQCD scaling rules.