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arxiv: 1108.3017 · v1 · pith:XPRPPJJVnew · submitted 2011-08-15 · ✦ hep-ph · hep-ex· hep-lat· nucl-ex· nucl-th

N*(1535) electroproduction at high Q2

classification ✦ hep-ph hep-exhep-latnucl-exnucl-th
keywords gammamodelquarkrelationadditionamplitudesappliedcalculate
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A covariant spectator quark model is applied to study the gamma N -> N*(1535) reaction in the large Q2 region. Starting from the relation between the nucleon and N*(1535) systems, the N*(1535) valence quark wave function is determined without the addition of any parameters. The model is then used to calculate the gamma N -> N*(1535) transition form factors. A very interesting, useful relation between the A12 and S12 helicity amplitudes for Q2 > GeV^2, is also derived.

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