Multiquark hadrons. I. Phenomenology of Q2Q̄2 mesons

Abstract

The spectra and dominant decay couplings of Q2Q̄2 mesons are presented as calculated in the quark-bag model. Certain known 0+ mesons [ε(700),S*,δ,κ] are assigned to the lightest cryptoexotic Q2Q̄2 nonet. The usual quark-model 0+ nonet (QQ̄L=1) must lie higher in mass. All other Q2Q̄2 mesons are predicted to be broad, heavy, and usually inelastic in formation processes. Other Q2Q̄2 states which may be experimentally prominent are discussed. © 1977 The American Physical Society.