<正>The experiment was carried out at the Sector-Focusing Cyclotron in IMP. 133Sm was produced via fusion, evaporation in the reaction 40Ca(96Ru,2pn).Itsβ-dela
Last year two exotic and narrow baryons, θ^+(1540) and Ξ3/2^--(1862), which are pentaquark states have been reported by several group. Their minimal quark co