ИСТИНА

The excitation of nucleon resonances (N*) by real and virtual photons is an important source of information on the structure of excited nucleon states and dynamics of the nonperturbative strong interaction underlying the resonance generation from quarks and gluons [1, 2]. This information has already become available from the nucleon resonance electroexcitation amplitudes (γvpN∗ electrocouplings). Exclusive pπ0 electroproduction channel is the important source of information on γvpN∗ electrocouplings [3]. The CLAS12 detector [4] is the only facility in the world capable to provide information on γvpN∗ electrocouplings from the data of π0p channel at still almost unexplored range of photon virtualities Q^2 > 5.0 GeV^2 and to extend the studies of N∗ in the mass range > 2.0 GeV. The preliminary results from analysis π0p electroproduction data measured with CLAS12 will be presented in the talk. Application of the exclusive event selection procedure, developed based on MC simulation, to the CLAS12 π0p data analysis provided high purity sample of π0p events in the kinematic range covered by the measurements in RG-K run. The results obtained are paving a way for extraction of beam asymmetry and eventually cross sections for exclusive π0p electroproduction measured with the CLAS12.