arXiv:hep-ph/9910540·v1·High Energy Physics — Phenomenology
On nature of scalar a_0(980) and f_0(980)-mesons
N.N. Achasov (Sobolev Institute for Mathematics SB RAS)🇷🇺
Abstract
It is presented a critical consideration of all unusual properties of the scalar a_0(980) and f_0(980)-mesons in the four-quark, two-quark and molecular models. The arguments are adduced that the four-quark model is more preferable. It is discussed the complex of experiments that could finally resolve this issue.
Comments: 6 pages, LaTeX 2e, uses espcrc1.sty, Plenary Talk given at 8th International Conference on HADRON Spectroscopy (HADRON 99), Beijing, China, 24-28 August 1999