Exotic hadron production in quark combination model

TL;DR

This paper investigates the production mechanisms of exotic hadrons, specifically the $f_0(980)$, within the quark combination model, analyzing production rates and spectra in heavy-ion collisions to understand their formation.

Contribution

It introduces a framework for understanding exotic hadron production in the quark combination model and compares different configurations of $f_0(980)$ in collision data.

Findings

Production rates depend on the quark configuration of $f_0(980)$.

Spectra of $f_0(980)$ vary with different quark compositions.

Unitarity considerations impact exotic hadron production models.

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.