The model-independent analysis indications for spectroscopy of scalar mesons. Proof for the K_0~*(900)

摘要

In a model-independent approach the data on ππ → ππ, KK?, ηη, ηη′ in the I~GJ~(PC) 0~+0~(++) channel and on the Kπ scattering in the I(J~p) (0~+)channel are analyzed jointly for studying the status and QCD nature of the f_0- and the K*_0-mesons. It is shown that in the 1500-MeV region, there are two states, wide (interpreted as a glueball) and narrow (qq?). In the Kπ-scattering data analysis, the proof for the K*_0(900) is given.