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arXiv · hep-ph/0207207

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

T. Frederico·Hans-Christian Pauli·Shan-Gui Zhou
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Abstract

We show that the splitting between the light pseudo-scalar and vector meson states is due to the strong short-range attraction in the ^1S_0 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 pseudo-scalar ground state mass fixes the renormalized strength of the Dirac-delta interaction.

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T. Frederico, Hans-Christian Pauli, Shan-Gui Zhou. 2002-08-05. Splitting of the pi - rho spectrum in a renormalized light-cone QCD-inspired model. https://doi.org/10.1103/physrevd.66.054007

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