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arxiv: 0906.4081 · v1 · pith:FDVKW6BXnew · submitted 2009-06-22 · ✦ hep-ex

Recent results on nucleon resonance electrocouplings from the studies of π⁺π⁻p electroproduction with the CLAS detector

classification ✦ hep-ex
keywords clasanalysisdetectorelectrocouplingselectroproductionmassesnucleonrecent
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Recent results on nucleon resonance studies in $\pi^{+}\pi^{-}p$ 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 $0.2<Q^{2}<1.5$ $GeV^2$. Electrocouplings of several excited proton states with masses less than 1.8 GeV were obtained for the first time from the analysis of $\pi^{+}\pi^{-}p$ exclusive electroproduction channel.

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