Abstract

A general mixing of scalar mesons below 2 GeV within the framework of a nonlinear chiral Lagrangian that includes two scalar meson nonets (a two‐quark nonet and a four‐quark nonet) is discussed, and the mass spectrum of the I = 1/2, I = 1 and I = 0 scalar states are studied. For the I = 0 states, in addition to the two and four‐quark components a scalar glueball component is also taken into account. Numerical estimates of various components of these states (two‐quark and four‐quark components of I = 1/2 and I = 1 states, and two‐quark, four‐quark and glueball components of I = 0 states) are estimated.

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