Strange pentaquarks with a hidden heavy quark-antiquark pair
Abstract
The strange pentaquarks with hidden heavy quark pair (q3c c and q3b b) are investigated by the coupled-channel quark cluster model. Two types of the q3 color-octet configurations are found to provide the attraction, which makes bound states, sharp resonances, and cusps in the baryon meson scattering. A resonance appears at around 4500 MeV in the strange hidden charm sector. Such structures are more clearly seen in the hidden bottom systems.
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