1998/09/18 by S. M. H. Wong · 5 citations
Physics and Astronomy · #Divergence (linguistics) #Excited state #Fock space #High-Energy Particle Collisions Research #Meson #Nuclear physics #Nucleon #Octet #Particle physics #Particle physics theoretical and experimental studies #Physics #Quantum Chromodynamics and Particle Interactions #Quantum chromodynamics #Quantum mechanics #Quarkonium #Singlet state #hep-ph
paper · pdf · doi:10.1016/s0920-5632(99)00169-3
published in Nuclear Physics B - Proceedings Supplements 74(1-3), 231-234 (Elsevier BV) · espcrc2 style, talk presented at QCD'98, July 1998, Montpellier, France
arxiv created 1998/09/18 · openalex publication_date 1999/03/01 · arxiv updated 2009/11/30 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
We show that although there is no infrared divergence in exclusive P-wave quarkonium decays, the colour octet contribution is no less important than in the inclusive decay. Results from more proper calculations with only colour singlet contribution are not sufficient to account for the measured partial decay widths and so the next higher Fock state must be included. Using the \cJ decay into N N as an example, a scheme is devised to yield estimates of the decay widths using both contributions, the results are comparable with experimental measurements.