Bound states of $Θ^+$ in nuclei

Details Bound states of $Θ^+$ in nuclei Bound states of $Θ^+$ in nuclei

2005-01-12

arxiv.org/abs/nucl-th/0501034v1

Nucl.Phys.A755:503-506,2005

Physics

Nuclear Physics

Nuclear Theory

Presentation in the 10th International Baryon Conference BARYON04

Scientific paper

10.1016/j.nuclphysa.2005.03.063

We study the binding energy and the width of the $\Theta^+$ in nuclei, associated to the $K N$ and $ K \pi N$ components. The first one leads to negligible contributions while the second one leads to a sizeable attraction, enough to bind the $\Theta^+$ in nuclei. Pauli blocking and binding effects on the $K N$ decay reduce considerably the $\Theta^+$ decay width in nuclei and medium effects associated to the $ K \pi N$ component also lead to a very small width, as a consequence of which one finds separation between the bound levels considerably larger than the width of the states.

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