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Constituent string model for hybrid mesonic excitations

Yu. S. Kalashnikova, Yu. B. Yufryakov

hep-pharXiv:hep-ph/9510357

Abstract

The model for hybrid excitations of the QCD string with quarks is presented starting from the perturbation theory in the nonperturbative background. The propagation of a system containing q q-pair and gluon is considered. The simplified version of the Hamiltonian, including both long-range nonperturbative interaction and Coulomb force, is derived. The masses of the lowest q q g hybrids are evaluated, and numerical results for the spectra are listed.

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