Low-Q^2 scaling behavior of the form-factor ratios for the NΔ(1232)-transition

Details Low-Q^2 scaling behavior of the form-factor ratios for the NΔ(1232)-transition Low-Q^2 scaling behavior of the form-factor ratios for the NΔ(1232)-transition

2009-01-02

arxiv.org/abs/0901.0184v2

Phys.Lett.B688:168-173,2010

Physics

High Energy Physics

High Energy Physics - Phenomenology

6 pages, 2 figures

Scientific paper

10.1016/j.physletb.2009.11.066

We address the issue of the scaling behavior of the nucleon electromagnetic form factors (FFs). We propose a consistent Lagrangian of the electromagnetic N\Delta(1232)-interaction possessing all the internal symmetries of the spin-3/2 baryon resonance, point and gauge invariance. The point and gauge invariant FFs may exhibit quasi-scaling behavior--while the FFs do not reach asymptotic scaling domain, the ratios thereof do. The hypothesis of the quasi-scaling is in good agreement with the experimental data available at Q^2 > 0.4 GeV^2.

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