Theoretical Development on Pentaquarks
classification
✦ hep-ph
nucl-th
keywords
theoreticaldevelopmentnonepentaquarksbriefemphasizeexistenceexotic
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I first give a brief overview of the status of exotic hadron search so far. Then I review the recent theoretical development on pentaquarks. Finally I emphasize that none of theoretical formalisms predicts the existence of $\Theta$ pentaquark very reliably. None of them explains its narrow width in a natural way.
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