Predictive ability of QCD sum rules for decuplet baryons
- Nuclear Physics Laboratory, Department of Physics, University of Colorado, Boulder, Colorado 80309-0446 (United States)
QCD sum rules for decuplet baryon two-point functions are investigated using a comprehensive Monte Carlo based procedure. In this procedure, all uncertainties in the QCD input parameters are incorporated simultaneously, resulting in realistic estimates of the uncertainties in the extracted phenomenological parameters. Correlations between the QCD input parameters and the phenomenological parameters are studied by way of scatter plots. The predicted couplings are useful in evaluating matrix elements of decuplet baryons in the QCD sum rule approach. They are also used to check a cubic scaling law between baryon couplings and masses, as recently found by Dey and co-workers. The results show a significant reduction in the scaling constant and some possible deviations from the cubic law. {copyright} {ital 1998} {ital The American Physical Society}
- OSTI ID:
- 566016
- Journal Information:
- Physical Review, C, Journal Name: Physical Review, C Journal Issue: 1 Vol. 57; ISSN 0556-2813; ISSN PRVCAN
- Country of Publication:
- United States
- Language:
- English
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