Nucleon Transition Form Factors and New Perspectives
The status of the electro-excitation program to study baryon resonances at Jefferson Lab will be exemplified by the most recent results on resonance parameters and transition form factors in single and double-pion production. These results demonstrate that the separation of resonance and background contributions and therefore the extraction of the electro-coupling amplitudes of resonances become easier and cleaner at higher four-momentum transfers (Q2). Furthermore, the double-pion in comparison to the single-pion channel shows a higher sensitivity to higher excited resonances and a distinctly different Q2 dependence of the background amplitudes. The combined analysis of the single- and double-pion data reduces model dependent uncertainties significantly, which allows us to extract the resonant electrocoupling amplitudes with an unprecedented quality.
- Research Organization:
- Thomas Jefferson National Accelerator Facility (TJNAF), Newport News, VA (United States)
- Sponsoring Organization:
- USDOE - Office of Energy Research (ER)
- DOE Contract Number:
- AC05-84ER40150
- OSTI ID:
- 917554
- Report Number(s):
- JLAB-PHY-06-626; DOE/ER/40150-5016; TRN: US0805068
- Journal Information:
- Journal of Physics: Conference Series, Vol. 69; Conference: GHP topical group workshop, APS Group on Hadronic Physics Meeting, 22-Oct-06, Nashville, TN
- Country of Publication:
- United States
- Language:
- English
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