Electromagnetic interaction vertex of $Δ$ baryons in hard-wall AdS/QCD model

Details Electromagnetic interaction vertex of $Δ$ baryons in hard-wall AdS/QCD model Electromagnetic interaction vertex of $Δ$ baryons in hard-wall AdS/QCD model

2011-03-19

arxiv.org/abs/1103.3778v2

Physics

High Energy Physics

High Energy Physics - Phenomenology

22 pages, typos corrected, improved English, added new Lagrangian terms, added section of numerical analysis, new references

Scientific paper

We consider an interaction of a spin-3/2 field with the electromagnetic field in the framework of the hard-wall model of AdS/QCD. We write Lagrangian for this interaction including all kinds interaction terms in the bulk of AdS$_{5}$ space and present the scattering matrix element in integrals over the fifth coordinate. Comparing the current matrix element obtained in the boundary of this space with the one known from field theory, we find the vertex function coefficients for the $\gamma^{*}\Delta\Delta$ interaction vertex. As an example, we apply the obtained coefficients to the computation of the charge form factor $G_{E0}$ for the $\Delta^{+}$ baryon and compare the result with the one obtained in the field theory.

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