Nuclear Physics Seminars
Tuesday, September 26, 2006
Physics Building, Room 204
[Host: Donal Day]
"Q 2 Evolution of &gamma * N → N * Transition Amplitudes from Pion Electroproduction Data"
I will make short introduction to clarify some notations used in N * physics and to present resonances which we have
investigated within N * program of Hall B (JLab).
Then I will discuss goals of N * program related to the
Q 2 evolution of &gamma * N &rarr N * amplitudes.
Here the focus will be on the investigation of the scale of
transition from nonperturbative to perturbative regime of QCD
and on the nature of the Roper resonance.
Further, I will discuss approaches used for the extraction
of resonance contributions to the pion electroproduction
and present the results obtained from JLab (mostly Hall B) data.
This will be followed by the discussion of the obtained results
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