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Analysis tools for N^* studies at high Q²

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N* studies at high photon virtualities. Physics objectives.

Theory Support for the Excited Baryon Program at the Jlab 12 GeV Upgrade

N*-GPD Meeting at Jefferson Lab, September 11 2009.

V. Mokeev (Jlab): The models for evaluation of γ_vNN^* electrocouplings from the Nπ, Nππ electroproduction data and their extension for photon virtualities up to 12 GeV²

P. Kroll (Wuppertal U.): Status of partonic description of exclusive pion production

C. Weiss (JLab): Comments on finite-energy sum rules and duality in exclusive electroproduction processes

Nπ channels.

Electroexcitation of the Roper resonance for 1.7 < Q² < 4.5 GeV² in ^→ep → enπ⁺. By CLAS Collaboration (I.G. Aznauryan et al.). JLAB-PHY-08-811, Apr 2008. 6pp.

Electroexcitation of the P₃₃(1232), P₁₁(1440), D₁₃(1520), S₁₁(1535) at Q² = 0.4 and 0.65 (GeV/c)². I.G. Aznauryan, (Yerevan Phys. Inst.) , V.D. Burkert, H. Egiyan, (Jefferson Lab) , K. Joo, (Connecticut U.) , R. Minehart, L.C. Smith, (Virginia U.)

Multipole amplitudes of pion photoproduction on nucleons up to 2-GeV within dispersion relations and unitary isobar model. I.G. Aznauryan, (Yerevan Phys. Inst.)

Nππ channels.

Model Analysis of the pπ⁺π^- Electroproduction Reaction on the Proton. Viktor I. Mokeev, (Jefferson Lab & SINP, Moscow) , Volker D. Burkert, (Jefferson Lab), T-S. H Lee (ANL & EBAC), et al.

Electroproduction of pπ⁺π^- off protons at 0.2 < Q² < 0.6 GeV² and 1.3 < W < 1.57 GeV with CLAS. By CLAS Collaboration (G.V. Fedotov, V.I.Mokeev, V.D.Burkert et al.). JLAB-PHY-08-871, Sep 2008. 25pp

Recent results on nucleon resonance electrocouplings from the studies of π⁺π^-p electroproduction with the CLAS detector. V.I. Mokeev, V.D. Burkert, L. Elouadrhiri, G.V. Fedotov, E.N. Golovach, B.S. Ishkhanov, JLAB-PHY-09-1013, Jun 2009. 7pp.

A Phenomenological description of π^- Δ⁺⁺ photoproduction and electroproduction in nucleon resonance region: M. Ripani, V. Mokeev et al.