Hyperons in effective chiral quark models

Abstract

Baryonic correlation functions are calculated within an effective chiral quark model motivated by the instanton liquid model of QCD. Using a flavour SU(3) symmetry for the local four-quark interaction and taking rotational zero modes for the quantization into account low-energy hadronic observables are in surprising agreement with experimental data.

Magnetic Moments of Octet and Decuplet Baryons in the SU(3) Chiral Quark Soliton Model

“…13 H 5 > It turns out that these first-order rotational corrections play distinguishable roles also in the SU (3) version of the CQSM. 16 > It is this crucial observation that makes the present analysis of the magnetic moments qualitatively new as compared with the previous works done in the Skyrme mode1.17)-J 9 > § 2. Theory and its predictions…”

“…These two corrections, which are respectively called the "dynamical" and "kinematical" corrections in Ref. 16 · · · · · · · · · · · · · · · · · · · · · · · · · · · · i;= Hif6 I ~·-. .,.…”

“…Here we follow the prescription given in Ref. 16), which generalizes the standard proper-time regularization so that it takes account of the physical time order of relevant collective space operators.) The discussion given below is then taken as a simplified explanation of the general method of calculation, leaving aside the above complexity.…”

“…The flavor SU(3) model contains one additional parameter ms or Llms. This parameter is determined so as to reproduce the mass spectra of the octet and decuplet baryons according to the mass formula given in Ref 16),. which gives L1ms:::::200 MeV.…”