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arXiv · hep-ph/9607280

Quarkonia in Hamiltonian Light-Front QCD

Martina M. Brisudova·Robert J. Perry·Kenneth G. Wilson
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Abstract

A constituent parton picture of hadrons with logarithmic confinement naturally arises in weak coupling light-front QCD. Confinement provides a mass gap that allows the constituent picture to emerge. The effective renormalized Hamiltonian is computed to ${\cal O}(g^2)$, and used to study charmonium and bottomonium. Radial and angular excitations can be used to fix the coupling $α$, the quark mass $M$, and the cutoff $Λ$. The resultant hyperfine structure is very close to experiment.

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Martina M. Brisudova, Robert J. Perry, Kenneth G. Wilson. 2001-10-31. Quarkonia in Hamiltonian Light-Front QCD. https://doi.org/10.1103/physrevlett.78.1227

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