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<pre>Theory Center Seminar
Monday, March 15, 2010
1:00 p.m.
CEBAF Center, Room L104
Coffee at 12:45 p.m.
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<pre><b>Coupled Channel Effects in Meson Photo and Electroproduction at High Energy
</b>
Jean-Marc Laget
JLab
In the energy range accessible at JLab6 and JLab12, the coupling to the vector
meson production channels provides us with a natural explanation of two long
standing problems: i) the magnitude of the cross section of charged pion
photoproduction near 90 degrees and its scaling behavior (s^-7), ii) the strong
cross section of the neutral pion electroproduction at large Q^2 recently
measured at JLab. I will present this approach which relates the amplitudes
of several reactions recently determined at JLab.
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