Effects of Instantons on the Excited Baryons and Two-Nucleon Systems

Abstract

The effects of the spin-orbit and the tensor parts of the instanton-induced interaction on the excited nonstrange baryons up to $N$=2 and on the two-nucleon systems are investigated. The spin-orbit force from the instanton-induced interaction cancels most of that from the one-gluon exchange in the excited baryons while the spin-orbit force in the nucleon systems remains strong after the inclusion of the instanton-induced interaction. The model including the spin-orbit and the tensor terms of the instanton-induced interaction as well as the one-gluon exchange is found to reproduce successfully the excited baryon mass spectrum and the scattering phase shifts of two nucleons in the spin-triplet relative $P$-wave state.

26 pages, LaTeX, 3 uuencoded figures

References in corpus (4)

• Evidence for the Role of Instantons in Hadron Structure from Lattice QCD
• An updated analysis of NN elastic scattering data to 1.6 GeV
• Heavy Hadrons and QCD Instantons
• Effects of the $U_A(1)$ Anomaly on $\eta \to 2\gamma$ Decay

Cited by in corpus (8)

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• Spin-Orbit Force of Instanton-Induced Interaction in Strange and Charmed Systems
• Triquark structure and isospin symmetry breaking in exotic Ds mesons
• A quark model analysis of the charge symmetry breaking in nuclear force
• Heavy baryon production with an instanton interaction
• Finite Quark Mass Effects in the Improved Ladder Bethe-Salpeter Amplitudes
• The effect of Confined One Gluon Exchange Potential and Instanton Induced Interaction in Nucleon-Nucleon Interaction