Hybrid exotic meson with J^{PC}=1^{-+} in AdS/QCD

Details Hybrid exotic meson with J^{PC}=1^{-+} in AdS/QCD Hybrid exotic meson with J^{PC}=1^{-+} in AdS/QCD

2008-11-05

arxiv.org/abs/0811.0645v1

JHEP 0901:034,2009

Physics

High Energy Physics

High Energy Physics - Phenomenology

10 pages, 1 Table

Scientific paper

10.1088/1126-6708/2009/01/034

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 QCD observables such as the $\rho$-meson mass, we predict the masses of the hybrid exotic meson. The results turn out to be $1476 \mathrm{MeV}$ for the ground state, and $2611 \mathrm{MeV}$ for the first excited one. Being compared with the existing experimental data for the $\pi_1(1400)$, which is known to be $m_{\pi_1} = 1351\pm30 \mathrm{MeV}$, 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.

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