Exotic hadron production in quark combination model

Abstract

The philosophy on production of exotic hadrons (multi-quark states) in the framework of quark combination model is investigated, taking $f_0(980)$ as an example. The production rate and $p_T$ spectra of $f_0(980)$ considered as $(s\bar{s})$ or $(s\bar{q}\bar{s}q)$ respectively, are calculated and compared in Au+Au collisions at $\sqrt{s_{NN}}=200GeV$. The unitarity of various combination models, when open for exotic hadron production, is addressed.

5 pages, 1 figure, new version with minor corrections and one ref. added

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