1996/01/16 by Matteo Cacciari, Michael Krämer · 2 citations
Physics and Astronomy · #Artificial intelligence #Baryon #Color model #Color space #Computer science #Fermilab #HERA #High-Energy Particle Collisions Research #Large Hadron Collider #Nuclear physics #Octet #Particle physics #Particle physics theoretical and experimental studies #Physics #Quantum Chromodynamics and Particle Interactions #Quantum chromodynamics #Tevatron #hep-ph
paper · pdf · doi:10.1103/physrevlett.76.4128
published as Phys.Rev.Lett.76:4128-4131,1996 · 10 pages, LaTeX, epsfig, 4 figures
arxiv created 1996/01/16 · openalex publication_date 1996/05/27 · arxiv updated 2009/11/30 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
We have calculated the leading color-octet contributions to the production of J/\ensuremathψ particles in photon-proton collisions. Using the values for the color-octet matrix elements extracted from fits to prompt J/\ensuremathψ data at the Fermilab Tevatron, we demonstrate that distinctive color-octet signatures should be visible in J/\ensuremathψ photoproduction. However, these predictions appear at variance with recent experimental data obtained at HERA, indicating that the phenomenological importance of the color-octet contributions is smaller than expected from theoretical considerations and suggested by the Fermilab Tevatron fits.