Effects of Final-State Interaction and Screening on Strange- and Heavy-Quark Production
نویسندگان
چکیده
Final-state interaction and screening have a great influence on qq̄ production cross sections, which are important quantities in many problems in quark-gluon plasma physics. They lead to an enhancement of the cross section for a qq̄ color-singlet state and a suppression for a color-octet state. The effects are large near the production threshold. The presence of screening gives rise to resonances for qq̄ production just above the threshold at specific plasma temperatures. These resonances, especially cc̄ and bb̄ resonances, may be utilized to search for the quark-gluon plasma by studying the temperature dependence of heavy-quark pair production just above the threshold.
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