Excited decuplet baryons from QCD sum rules

Details Excited decuplet baryons from QCD sum rules Excited decuplet baryons from QCD sum rules

2006-05-24

arxiv.org/abs/nucl-th/0605065v1

Nucl.Phys.A791:352-364,2007

Physics

Nuclear Physics

Nuclear Theory

9 pages, 3 figures, 3 tables

Scientific paper

10.1016/j.nuclphysa.2007.04.020

A calculation of the mass spectrum in the baryon decuplet sector is presented using the method of QCD sum rules. Sum rules are derived for states of spin-parity 3/2+- and 1/2+ using both the conventional method and a parity-projection method. The predictive ability of the sum rules is explored by a Monte-Carlo based analysis procedure in which the three phenomenological parameters (mass, coupling, threshold) are treated as free parameters and fitted simultaneously. Taken together, the results give an improved determination of the mass spectrum in this sector from the perspective of non-perturbative QCD.

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