D. T. da Silva

Meson decay in a corrected P 0 3 model

The 3 P 0 model, in which qq pair production is the dominant mechanism, is extensively applied to both light and heavy meson decay and stands as one of the most successful strong decay models. The pair production can be obtained from the nonrelativistic limit of a microscopic interaction Hamiltonian involving Dirac quark fields. The evaluation of the decay amplitude can be performed by a diagrammatic technique for drawing quark lines. In this paper we use an alternative approach which consists of a mapping technique, the Fock-Tani formalism, in order to obtain an effective Hamiltonian starting from the same microscopic interaction. An additional effect is manifested in this formalism associated to the extended nature of mesons: bound-state corrections. A corrected 3 P 0 is obtained and applied, as an example, to b 1 → ωπ and a 1 → ρπ decays.

LIGHT MESON DECAY IN THE

Having its origin in a successful mapping technique, the Fock–Tani formalism, the corrected

MODEL

{}^{3}\!P_{0}

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model

C3P0 MODEL FOR CHARMED MESONS DECAY

({\rm C}\,{}^{3}\!P_{0})

STRANGE MESON DECAY IN THE C3P0 MODEL

retains the basic aspects of the

GLUEBALL-QUARKONIA MIXTURE IN THE f0(1710) DECAY

{}^{3}\!P_{0}

LIGHT QUARKONIA DECAYS IN THE CORRECTED 3P0 MODEL

predictions with the inclusion of bound-state corrections. Evaluation of the decay amplitudes has been performed for open-flavor strong decays in the light meson sector. The bound-state corrections introduce a fine-tuning for the former

Glueball decay in the Fock-Tani formalism

{}^{3}\!P_{0}