Meson spectrum in a relativistic harmonic model with instanton-induced interaction

K. B. Vijaya Kumar; B. Hanumaiah; S. Pepin

doi:10.1140/epja/i2002-10287-1

EPJ

Meson spectrum in a relativistic harmonic model with instanton-induced interaction

K. B. Vijaya Kumar¹, B. Hanumaiah¹ and S. Pepin²^*

¹ Department of Physics, Mangalore University, Mangalagangotri, 574 199, Mangalore, India
² Max-Planck-Institut für Kernphysik, Postfach 103980, D-69029, Heidelberg, Germany

Abstract

On the basis of the phenomenological relativistic harmonic model for quarks, we have obtained the ground-state masses of the light pseudo-scalar and vector mesons. The full Hamiltonian used in the investigation has Lorentz scalar + vector confinement potential, along with one-gluon-exchange potential (OGEP) and the instanton-induced quark-antiquark interaction. A good agreement is obtained with the experimental masses. The respective role of instanton-induced interaction and OGEP for the determination of the meson masses is discussed.