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Photo- and Electroproduction of Eta Mesons
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abstract
Eta photo- and electroproduction off the nucleon is investigated in an effective lagrangian approach that contains Born terms and both vector meson and nucleon resonance contributions. In particular, we review and develop the formalism for coincidence experiments with polarization degrees of freedom. The different response functions appearing in single and double polarization experiments have been studied. We will present calculations for structure functions and kinematical conditions that are most sensitive to details of the lagrangian, in particular with regard to contributions of nucleon resonances beyond the dominant $S_{11}$(1535) resonance.
Forward citations
Cited by 2 Pith papers
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New Isobar Models for $K^+\Lambda$ Electroproduction
Two isobar models with high-spin baryon resonances and modified electromagnetic form factors fit CLAS K+Lambda electroproduction data with chi-square per point of 2.16.
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Electroexcitation of Nucleon Resonances and the Emergence of Hadron Mass
A review argues that Jefferson Lab electroproduction data on nucleon resonances, analyzed with continuum Schwinger methods, confirm a momentum-dependent dressed quark mass, the essence of emergent hadron mass.
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