First successful renormalization of a QCD-inspired Hamiltonian

Details First successful renormalization of a QCD-inspired Hamiltonian First successful renormalization of a QCD-inspired Hamiltonian

2003-10-29

arxiv.org/abs/hep-ph/0310328v1

Physics

High Energy Physics

High Energy Physics - Phenomenology

LaTeX2e, 10 pages, 5 figures, 24 references. Invited talk at LC03 at IPPP Durham, 5--9 August 2003

Scientific paper

The long standing problem of non perturbative renormalization of a gauge field theoretical Hamiltonian is addressed and explicitly carried out within an (effective) light-cone Hamiltonian approach to QCD. The procedure is in line with the conventional ideas: The Hamiltonian is first regulated by suitable cut-off functions, and subsequently renormalized by suitable counter terms to make it cut-off independent. The formalism is applied to physical mesons with a different flavor of quark and anti-quark. The excitation spectrum of the $\rho$-meson with its excellent agreement between theory and experiment is discussed as a pedagogical example.

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