A covariant model for the gamma N -> N(1535) transition at high momentum transfer

Details A covariant model for the gamma N -> N(1535) transition at high momentum transfer A covariant model for the gamma N -> N(1535) transition at high momentum transfer

2011-05-11

arxiv.org/abs/1105.2223v2

Phys.Rev.D84:033007,2011; Publisher-note D84:039904,2011; Phys.Rev.D84:039904,2011

Physics

High Energy Physics

High Energy Physics - Phenomenology

To appear in Phys.Rev.D, 17 pages, 5 figures

Scientific paper

10.1103/PhysRevD.84.033007 10.11

A relativistic constituent quark model is applied to the gamma N -> N(1535) transition. The N(1535) wave function is determined by extending the covariant spectator quark model, previously developed for the nucleon, to the S11 resonance. The model allows us to calculate the valence quark contributions to the gamma N -> N(1535) transition form factors. Because of the nucleon and N(1535) structure the model is valid only for Q^2> 2.3 GeV^2. The results are compared with the experimental data for the electromagnetic form factors F1* and F2* and the helicity amplitudes A_1/2 and S_1/2, at high Q^2.

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