Journal
COMMUNICATIONS IN THEORETICAL PHYSICS
Volume 58, Issue 3, Pages 410-414Publisher
IOP PUBLISHING LTD
DOI: 10.1088/0253-6102/58/3/15
Keywords
Meson-Mesonscattering; unitarity; Hadronresonance
Categories
Funding
- National Nature Science Foundations of China [10925522, 10875001]
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In a previous paper [Commun. Theor. Phys., [arxiv:hep-ph/11081451]], we proposed a method to distinguish poles of different dynamical origin, in unitarized amplitudes of pi pi, K (K) over bar system. That is based on the observation that A Breit-Wigner resonance should exhibit two poles on different Riemann sheets which meet each other on the real axis when N-c = infinity. In this paper, we extend our previous work [Commun. Theor. Phys., [arXiv:hep-ph/11081451]] to the pi pi-K (K) over bar-eta eta three channel system. We reconfirm most of the predictions in our previous work [Commun. Theor. Phys., [arxiv:hep-ph/11081451]]. Especially the f(0) (980) is of K (K) over bar molecule nature. Other poles, including the sigma, are of Breit-Wigner type.
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