Electroproduction of Resonances at Large Momentum Transfers

Abstract

Measurements of transition form factors for the electro-excitation of nucleon resonances in the Q^2=5-14 GeV^2 region can provide one with the information on quark wave functions at small transverse separations. In particular a comparison of form factors for the states of opposite parity can give insight in the mechanisms of chiral symmetry breaking. I discuss perspectives of the theoretical description of such reactions using a combination of lattice calculations and light-cone sum rules

Comments: 10 pages, 5 figures. Contribution to the Proceedings of the 4th Workshop on Exclusive Reactions at High Momentum Transfer, May 18-21, 2010 Thomas Jefferson National Accelerator Facility Newport News, Virginia USA