Hadron Widths in Mixed-Phase Matter
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We derive classically an expression for a hadron width in a two-phase region of hadron gas and quark-gluon plasma (QGP). The presence of QGP gives hadrons larger widths than they would have in a pure hadron gas. We find that the phi width observed in a central Au+Au collision at square-root s = 200 GeV/nucleon is a few MeV greater than the width in a pure hadron gas. The part of observed hadron widths due to QGP is approximately proportional to (dN/dy)-1/3.
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ULTRARELATIVISTIC NUCLEAR COLLISIONS