Electroexcitation of the P33(1232), P11(1440), D13(1520), S11(1535) at Q{sup 2} = 0.4 and 0.65(GeV/c){sup 2}
Using two approaches: dispersion relations and isobar model, we have analyzed recent high precision CLAS data on cross sections of {pi}{sup 0}, {pi}{sup +}, and {eta} electroproduction on protons, and the longitudinally polarized electron beam asymmetry for p({rvec e},e{prime}p){pi}{sup 0} and p({rvec e},e{prime}p){pi}{sup +}. The contributions of the resonances P{sub 33}(1232), P{sub 11}(1440), D{sub 13}(1520), S{sub 11}(1535) to {pi} electroproduction and S{sub 11}(1535) to {eta} electroproduction are found. The results obtained in the two approaches are in good agreement with each other. There is also good agreement between amplitudes of the {gamma}* N {yields} S{sub 11}(1535) transition found in {pi} and {eta} electroproduction. For the first time accurate results are obtained for the longitudinal amplitudes of the P{sub 11}(1440), D{sub 13}(1520) and S{sub 11}(1535) electroexcitation on protons.
- Research Organization:
- Thomas Jefferson National Accelerator Facility (TJNAF), Newport News, VA (United States)
- Sponsoring Organization:
- USDOE Office of Energy Research (ER) (US)
- DOE Contract Number:
- AC05-84ER40150
- OSTI ID:
- 826030
- Report Number(s):
- JLAB-PHY-04-23; DOE/ER/40150-2812; nucl-th/0407021; TRN: US0402977
- Resource Relation:
- Other Information: No journal information given for this preprint; PBD: 1 Jul 2004
- Country of Publication:
- United States
- Language:
- English
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