Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2009-08-28
Phys.Lett.B693:287-291,2010
Physics
High Energy Physics
High Energy Physics - Phenomenology
4 pages, 6 figures
Scientific paper
10.1016/j.physletb.2010.08.045
We show that the infrared dynamics of string modes dual to $q\bar q$ states within a Dynamical AdS/QCD model of coupled dilaton-gravity background gives the Reggelike spectrum of $f0's$ scalars and higher spin mesons consistent with experimental data. The pion mass and its trajectory were also described with a scale deformation of the metric and a rescaled string mass. The available experimental decay widths of the $S\to PP$ decays provided a complementary check of the proposed classification scheme for$f_0(980)$, $f_0(1370)$, $f_0(1500)$ and $f_0(1710)$ as radial excitations of $f_0(600)$. For $f_0(980)$ we estimated a mixing angle of $\pm 20^o$ with other structures.
Frederico Tobias
Paula Wayne de
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