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arXiv · hep-ph/0301188

Spin Effects in Two Quark System and Mixed States

I. Haysak·Yu. Fekete·V. Morokhovych·S. Chalupka·M. Salak
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Abstract

Based on the numeric solution of a system of coupled channels for vector mesons ($S$- and $D$-waves mixing) and for tensor mesons ($P$- and $F$-waves mixing) mass spectrum and wave functions of a family of vector mesons $q\bar{q}$ in triplet states are obtained. The calculations are performed using a well known Cornell potential with a mixed Lorentz-structure of the confinement term. The spin-dependent part of the potential is taken from the Breit-Fermi approach. The effect of singular terms of potential is considered in the framework of the perturbation theory and by a configuration interaction approach (CIA), modified for a system of coupled equations. It is shown that even a small contribution of the $D$-wave to be very important at the calculation of certain characteristics of the meson states.

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I. Haysak, Yu. Fekete, V. Morokhovych, S. Chalupka, M. Salak. 2003-01-22. Spin Effects in Two Quark System and Mixed States. https://doi.org/10.1007/s10582-005-0059-1

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