$\rho$ meson-nucleon coupling constant from the soft-wall AdS/QCD model

Abstract

In the framework of the soft-wall model of AdS/QCD we calculated the $\rho$ meson nucleon coupling constant. Bulk-to boundary propagators for the free vector and spinor fields are presented, whose boundary values correspond to $\rho$ meson and to the nucleon respectively. The interaction Lagrangian between these fields is written in the bulk of AdS space and includes magnetic type interactions as well. Using the AdS/CFT correspondence from the bulk interaction action we derived the $g_{\rho NN}$ coupling constant in the boundary QCD. We found that the soft-wall model result for the $g_{\rho NN}$ constant is more close to empirical values than the one obtained in the hard-wall model.

15 pages, references added, some clarifications extended, version accepted for publication in IJTP

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• Nucleon's axial-vector form factor in the hard-wall AdS/QCD model
• $a_1$ meson-nucleon coupling constant at finite temperature from the soft-wall AdS/QCD model
• $a_1$ meson-baryon coupling constants in the framework of soft-wall and hard-wall AdS/QCD models
• Temperature dependence of $\rho$ meson-nucleon coupling constant from the AdS/QCD soft-wall model
• Tensor meson couplings in AdS/QCD
• Axial-vector form factor of nucleons at finite temperature from the AdS/QCD soft-wall model
• Deuteron gravitational form factors, generalized parton distributions, and charge density in the framework of the soft-wall AdS/QCD model
• Electromagnetic transition form factors of nucleons from the hard-wall AdS/QCD model
• Meson's Correlation Functions in a Nuclear Medium