Abstracto
- In this article a systematic quantitative analysis of the isoscalar bosonic states is performed in the framework of supersymmetric light front holographic QCD. It is shown that the spectroscopy of the η and h mesons can be well described if one additional mass parameter—which corresponds to the hard breaking of chiral Uð1Þ symmetry in standard QCD—is introduced. The mass difference of the η and η0 isoscalar mesons is then determined by the strange quark mass content of the η0 . The theory also predicts the existence of isoscalar tetraquarks which are bound states of diquarks and antidiquarks. The candidates for these exotic isoscalar tetraquarks are identified. In particular, the f0ð1500Þ is identified as isoscalar tetraquark; the predicted mass value 1.52 GeV agrees with the measured experimental value within the model uncertainties