A unitarized chiral calculation with next-to-leading-order terms generates a possible I=1 triply strange pentaquark near the Kbar-Xi threshold for one LEC set.
Search for $\Omega(2012)\to K\Xi(1530) \to K\pi\Xi$ at Belle
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abstract
Using data samples of $e^+e^-$ collisions collected at the $\Upsilon(1S)$, $\Upsilon(2S)$, and $\Upsilon(3S)$ resonances with the Belle detector, we search for the three-body decay of the $\Omega(2012)$ baryon to $K\pi\Xi$. This decay is predicted to dominate for models describing the $\Omega(2012)$ as a $K\Xi(1530)$ molecule. No significant $\Omega(2012)$ signals are observed in the studied channels, and 90\% credibility level upper limits on the ratios of the branching fractions relative to $K \Xi$ decay modes are obtained.
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On the possible existence of a $S=-3, \, I=1$ pentaquark
A unitarized chiral calculation with next-to-leading-order terms generates a possible I=1 triply strange pentaquark near the Kbar-Xi threshold for one LEC set.