First results on the electrocouplings of high lying N* states from Npp electroproduction off protons with the CLAS detector
We extended a phenomenological model [1], that was utilized for the evaluation of resonance transition helicity amplitudes from N?? electroproduction cross section data at W < 1.6 GeV and Q2 < 0.6 GeV2, to provide larger kinematic coverage. A successful description of the CLAS data [2] on nine differential N?? cross sections was achieved at W < 1.8 GeV and Q2 < 1.5 GeV2. The phenomenological analysis allowed us to isolate the resonant contribution and to determine electrocouplings for states with masses above 1.6 GeV. For the first time, results for the S31(1620), S11(1650), F15(1685), D33(1700), and P13(1720) states were obtained from the analysis of the p?+?? exclusive channel. \\[4pt] [1] V. I. Mokeev et al., arXiv:0906.4081[hep-ex], accepted by PRC.\\[0pt] [2] M.~Ripani et al., CLAS Collaboration, Phys. Rev. Lett. {\bf 91}, 022002 (2003). Experiment Numbers:
- Research Organization:
- Thomas Jefferson National Accelerator Facility, Newport News, VA (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC), Nuclear Physics (NP)
- DOE Contract Number:
- AC05-06OR23177
- OSTI ID:
- 1996815
- Report Number(s):
- JLAB-PHY-10-1346; DOE/OR/23177-7062
- Country of Publication:
- United States
- Language:
- English
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