It is shown that the exotic non-qqq hadrons of pentaquark [Formula: see text] states can be clearly distinguished from the conventional qqq-baryon resonances or their hybrids if the flavor of [Formula: see text] is different from any of the other four quarks. We suggest the physical process [Formula: see text], which can be investigated at the Thomas Jefferson National Accelerator Facility (JLab), as an ideal process to search for the existence or non-existence of the exotic hadron of minimal pentaquark state [Formula: see text].
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A 1999 study studied this question.
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