Recent results on nucleon resonance electrocouplings from the studies of $\ddot{I}{€}^{+}\ddot{I}{€}^{-}p$ electroproduction with the CLAS detector

Abstract

Recent results on nucleon resonance studies in $\ddot{I}{€}^{+}\ddot{I}{€}^{-}p$ electro- production off protons with the CLAS detector are presented. The analysis of CLAS data allowed us to determine all essential contributing mechanisms, providing a credible separation between resonant and non-resonant parts of the cross sections in a wide kinematical area of invariant masses of the final hadronic system $1.3<W<1.8$ GeV and photon virtualities $0.2<Q^2<1.5$ $Ge{V}^2$. Electrocouplings of several excited proton states with masses less than 1.8 GeV were obtained for the first time from the analysis of $\ddot{I}{€}^{+}\ddot{I}{€}^{-}p$ exclusive electroproduction channel.

7 pages, 5 figures, NSTAR 2009 conference