Predicative Ability of QCD Sum Rules for Decuplet Baryons

Details Predicative Ability of QCD Sum Rules for Decuplet Baryons Predicative Ability of QCD Sum Rules for Decuplet Baryons

1997-07-11

arxiv.org/abs/hep-ph/9707332v2

Phys.Rev.C57:322-328,1998

Physics

High Energy Physics

High Energy Physics - Phenomenology

13 pages, RevTeX, 5 PS figures embedded with psfig.sty

Scientific paper

10.1103/PhysRevC.57.322

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 coworkers. The results show a significant reduction in the scaling constant and some possible deviations from the cubic law.

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