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arXiv · hep-ph/9609348

Tetraquarks with colour-blind forces in chiral quark models

S. Pepin·Fl. Stancu·M. Genovese·J. -M. Richard
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Abstract

We discuss the stability of multiquark systems within the recent model of Glozman et al. where the chromomagnetic hyperfine interaction is replaced by pseudoscalar-meson exchange contributions. We find that such an interaction binds a heavy tetraquark systems $QQ\bar q\bar q$ ($Q=c,b and q=u,d)$ by 0.2-0.4 GeV. This is at variance with results of previous models where $cc\bar q\bar q$ is unstable.

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S. Pepin, Fl. Stancu, M. Genovese, J. -M. Richard. 1996-09-13. Tetraquarks with colour-blind forces in chiral quark models. https://doi.org/10.1016/s0370-2693(96)01597-3

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