Speaker
Dr
Liping Zou
(Institute of Modern Physics, CAS)
Description
In this talk a quantitative analysis of the isoscalar bosonic states will be shown in the framework of supersymmetric light front holographic QCD. The spectroscopy of the $\eta$ and $h$ mesons can be well described if one additional mass parameter -- which corresponds to the hard breaking of chiral $U(1)$ symmetry in standard QCD -- is introduced. The mass difference of the $\eta$ and $\eta'$ isoscalar mesons is then determined by the strange quark mass content of the $\eta'$. The theory also predicts the existence of isoscalar tetraquarks which are bound states of diquarks and anti-diquarks. The candidates for these exotic isoscalar tetraquarks are identified. In particular, the $f_0(1500)$ is identified as isoscalar tetraquark; the predicted mass value 1.52 GeV agrees with the measured experimental value within the model uncertainties.
Authors
Prof.
Hans Gunter Dosch
(Institut fur Theoretische Physik der Universitat, D-69120 Heidelberg, Germany)
Dr
Liping Zou
(Institute of Modern Physics, CAS)
