Test of amplitude signs in pion photoproduction predicted by the transformation from current to constituent quarks |
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Authors: | FJ Gilman I Karliner |
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Institution: | Stanford Linear Accelerator Center, Stanford University, Stanford, Calif. 94305, USA |
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Abstract: | The transformation from current to constituent quark basis states is discussed as it applies to relating amplitudes for photon-nucleon decays of baryon resonances. The predictions for the relative signs of pion photoproduction amplitudes through baryon resonances in the and multiplets are presented and compared with experiment. Theory and experiment are found to be completely, with the pion-nucleom decay amplitudes of resonances in the having the signs characteristic of the rather than (8, 1)?(1, 8) term in the transformation axial-vector charge. |
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