Splitting of the pi-rho spectrum in a renormalized light-cone QCD-inspired model

Frederico, T.; Pauli, H.C.; Zhou, S.G.

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Splitting of the pi-rho spectrum in a renormalized light-cone QCD-inspired model

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Pauli, H.C.
Prof. Hans A. Weidenmüller, Emeriti, MPI for Nuclear Physics, Max Planck Society;

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Frederico, T., Pauli, H., & Zhou, S. (2002). Splitting of the pi-rho spectrum in a renormalized light-cone QCD-inspired model. Physical Review D (Particles and Fields), 66, 054007-1-054007-6.

Cite as: https://hdl.handle.net/11858/00-001M-0000-0011-8519-2

Abstract

We show that the splitting between the light pseudoscalar and vector meson states is due to the strong short-range attraction in the ¹S₀ sector which makes the pion and the kaon light particles. We use a light-cone QCD-inspired model of the mass squared operator with harmonic confinement and a Dirac-delta interaction. We apply a renormalization method to define the model, in which the pseudoscalar ground state mass fixes the renormalized strength of the Dirac-delta interaction