Emission source functions are extracted from correlation functions constructed from charged pions produced at midrapidity in Au+Au collisions at sqrt[s(NN)]=200 GeV. The source parameters extracted from these functions at low k(T) give first indications of a long tail for the pion emission source. The source extension cannot be explained solely by simple kinematic considerations. The possible role of a halo of secondary pions from resonance emissions is explored.

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SU(4) second-order mass-breaking effects on charmed hadron masses are studied in a dynamical consideration. We consider the process S + B +B + S in the s , t , and u channels, where S is the first-order symmetry-breaking spurion. Assuming that the nonexotic intermediate states dominate, several mass sum rules are obtained. Charmed isomultiplet masses are also estimated.

Employing the nonrelativistic quark-model approach, the masses of charmed and b-quark hadrons are estimated