Heavy quark hybrids, decay puzzles, and BES/CLEO/RHIC experiments

✍ Scribed by Leonard S. Kisslinger

• Book ID: 104070792
• Publisher: Elsevier Science
• Year: 2010
• Tongue: English
• Weight: 183 KB
• Volume: 844
• Category: Article
• ISSN: 0375-9474
• DOI: 10.1016/j.nuclphysa.2010.05.030

✦ Synopsis

We estimate the energy of the lowest charmonium and upsilon states with hybrid admixtures using the method of QCD Sum Rules. Our results show that the Ψ (2S) and Υ(3S) states both have about a 50% admixture of hybrid and meson components. From this we find explanations of both the famous ρπ puzzle for charmonium, and the unusual pattern of σ decays that have been found in Υ decays. Moreover, this picture can be used for predictions of heavy quark production with the octet model for RHIC.