Strange tribaryons

Abstract

We use two-body potentials derived from a constituent quark cluster model to analyze the bound-state problem of the $\Sigma NN$ system. The observables of the two-body subsystems, $NN$ and $\Sigma N$, are well reproduced. We do not find $\Sigma NN$ bound states, but there are two attractive channels with a resonance close above the three-body threshold. These channels are the $(I,J)=(1,1/2)$ and $(0,1/2)$, their quantum numbers, widths and energy ordering consistent with the recently measured strange tribaryons from the ${}^4\mathrm{He}(K_{\mathrm{stopped}}^{-},N)$ reactions in the KEK PS E471 experiment.

16 pages, 10 figures, 4 tables. Accepted for publication in Phys. Rev. C

References in corpus (2)

• Constituent quark model study of the meson spectra
• Quark-model study of few-baryon systems

Cited by in corpus (5)

• Faddeev study of heavy baryon spectroscopy
• $\Lambda NN$ and $\Sigma NN$ systems at threshold
• $\Lambda NN$ and $\Sigma NN$ systems at threshold: II. The effect of D waves
• Kaon-condensed hypernuclei as highly dense self-bound objects
• Static and dynamic properties of hadronic systems with heavy quarks b and c