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Experimental evidences for the existence of exotic 5-quark baryons have been reported recently by several groups. However, the statistical significance of these results is quite low, and the pentaquark signal has not been seen in other experiments. The existence of such exotic states, if confirmed, will open new perspectives in hadron spectroscopy as well as in QCD. The new dedicated experiments currently underway at Jefferson Lab with the CLAS detector will hopefully give a clearer answer on the existence and, possibly, on the properties of pentaquarks. In this talk I will review the results obtained so far in the search for 5-quark states and describe the characteristics and goals of the new experiments running at CLAS.
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