2012/11/27 by Wayne W. Repko, Repko, Wayne W., Marco D. Santia +3
Physics and Astronomy · #High-Energy Particle Collisions Research #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions #hep-ph
paper · pdf · doi:10.48550/arxiv.1211.6373
New title, 7 pages, 5 tables,additional references
arxiv created 2013/08/26 · arxiv updated 2013/08/28
We investigate the effects of including the full three-loop QCD correction to the static short distance 1/r potential on the spectroscopy and decays in the charmonium and upsilon systems. We use a variational technique with the full three-loop corrected potential to determine a set of unperturbed trial wave functions and treat the relativistic and one-loop corrections as perturbations. The perturbed results are compared to the subset of the charmonium and upsilon spectra using a χ2 test. This approach results in more accurate descriptions of the hyperfine splittings in both the bb and cc systems.