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$Θ^+$ Hypernuclei

D. Cabrera·Q. B. Li·V. K. Magas·E. Oset·M. J. Vicente Vacas
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Abstract

We present results for the selfenergy of the $Θ^+$ pentaquark in nuclei associated with two sources: the $KN$ decay of the $Θ^+$ and the two meson baryon decay channels of the $Θ^+$ partners in an antidecuplet of baryons. The first source is shown to produce a small potential, unable to bind the $Θ^+$ in nuclei, while the second source gives rise to a large attractive potential. At the same time we show that the width of the $Θ^+$ in nuclei is small, such that, in light and medium nuclei, many bound $Θ^+$ states would appear with a separation between levels appreciably larger than the width of the states, thus creating an ideal scenario for pentaquark spectroscopy in nuclei.

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D. Cabrera, Q. B. Li, V. K. Magas, E. Oset, M. J. Vicente Vacas. 2005-01-12. $Θ^+$ Hypernuclei. https://doi.org/10.1016/j.physletb.2005.01.001

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