Scalar mesons within a dynamical holographic QCD model

We show that the infrared dynamics of string modes dual to qq¯ states within a Dynamical AdS/QCD model of coupled dilaton-gravity background gives the Regge-like spectrum of f0f0'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→PPS→PP decays provided a complementary check of the proposed classification scheme for f0(980)f0(980), f0(1370)f0(1370), f0(1500)f0(1500) and f0(1710)f0(1710) as radial excitations of f0(600)f0(600). For f0(980)f0(980) we estimated a mixing angle of ±o20±20o with other structures.