Hybrid exotic meson with J(PC)=1(-+) in AdS/QCD

We investigate the hybrid exotic meson with J(PC) = 1(-+) within the framework of an AdS/QCD model. Introducing a holographic field dual to the operator for hybrid exotic meson, we obtain the eigen-value equation for its mass. Fixing all free parameters by AdS/CFT dictionaries, we predict the masses of the hybrid exotic meson. The results turn out to be 1476 MeV for the ground state, and 2611 MeV for the first excited one. Being compared with the existing experimental data for the 71(1400), which is known to be m(pi 1) = 1351 +/- 30 MeV, the present result seems to be qualitative in agreement with it. We also predict the decay constant of pi(1)(1400): F-pi 1 = 10.6 MeV.