Evidence for the axial ghost pole in φ meson electromagnetic production at large momentum transfers
نویسنده
چکیده
The gluonic ghost pole has been instrumental in explaining the mass of the η and providing a plausible explanation for solving the spin crisis. We show that it also plays an important role in the description of photoand electroproduction of vector mesons at low energy and high momentum transfers. We calculate the axial ghost pole contribution to φ meson electromagnetic production in a model, which contains also a soft pomeron, and find agreement with recent CLAS data. Pacs: 12.40.Nn, 13.60.Le,13.88.+e
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Evidence for the flavor singlet axial anomaly related effects in φ meson electromagnetic production at large momentum transfers
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