Delta K, Lambda K, and Sigma K states in the extended chiral SU(3) quark model

Details Delta K, Lambda K, and Sigma K states in the extended chiral SU(3) quark model Delta K, Lambda K, and Sigma K states in the extended chiral SU(3) quark model

2005-11-21

arxiv.org/abs/nucl-th/0511057v2

Phys.Rev.C72:068201,2005

Physics

Nuclear Physics

Nuclear Theory

10 pages, 3 figures; revised version for publication in Phys. Rev. C

Scientific paper

10.1103/PhysRevC.72.068201

By use of the resonating group method, the Delta K, Lambda K, and Sigma K states are further dynamically studied in the extended chiral SU(3) quark model based on our previous work. Similar to the results given by the original chiral SU(3) quark model, the calculated results here still show that the interactions of Delta K with isospin I=1 and Sigma K with isospin I=1/2 are attractive, which can consequently lead to Delta K and Sigma K quasibound states. When the channel coupling of Lambda K and Sigma K is considered, the calculated phase shifts show a sharp resonance between the thresholds of these two channels with spin-parity J^P=1/2^-.

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