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QCD structure of quarkonium spin spectra

Journal Article · · Physical Review, D (Particles Fields); (United States)
; ; ;  [1]
  1. Department of Physics, University of Wisconsin, Madison, Wisconsin 53706 (United States)
We show that our QCD calculation of the [sup 1][ital P][sub 1] charmonium state can be incorporated into a global description of the fine and hyperfine structure of the charmonium and bottomonium systems. We propose a simple renormalization prescription in which all ambiguities are absorbed into a single strong coupling constant [alpha][sub [ital s]]. We find that the [ital O]([alpha][sub [ital s]][sup 2]) perturbative QCD potential leads to a consistent description of all splittings. The results are used to predict the unmeasured bottomonium [ital P]-wave hyperfine splittings.
DOE Contract Number:
AC02-76ER00881
OSTI ID:
6655676
Journal Information:
Physical Review, D (Particles Fields); (United States), Journal Name: Physical Review, D (Particles Fields); (United States) Vol. 47:7; ISSN PRVDAQ; ISSN 0556-2821
Country of Publication:
United States
Language:
English