The $ρ-ω$ splitting in constituent quark models

Details The $ρ-ω$ splitting in constituent quark models The $ρ-ω$ splitting in constituent quark models

2009-05-12

arxiv.org/abs/0905.1817v1

Phys.Lett.B677:36-38,2009

Physics

High Energy Physics

High Energy Physics - Phenomenology

8 pages, no figures. To be published in Phys. Lett. B

Scientific paper

10.1016/j.physletb.2009.05.017

In this letter we present a solution to describe simultaneously the light isoscalar and isovector vector mesons in constituent quark models. In Ref. [1] the $q\bar q$ spectrum was studied in a generalized constituent quark model constrained by the $NN$ phenomenology and the baryon spectrum. An overall good fit to the available experimental data was obtained. A major problem of this description was the relative position of the vector $\omega$ and $\rho$ mesons. The present results improve the description of the isoscalar meson spectroscopy. They should serve as a step forward in distinguishing conventional quark model mesons from exotic states.

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