Measurement of the Polarized Structure Function {sigma}{sub LT}{prime} for p({rvec e},e{prime} {pi}{sup +})n in the {Delta}(1232) Resonance Region
The polarized longitudinal-transverse structure function {sigma}{sub LT{prime}} has been measured using the p({rvec e}e{prime}{pi}{sup +})n reaction in the {Delta}(1232) resonance region at Q{sup 2} = 0.40 and 0.65 GeV{sup 2}. No previous {sigma}{sub LT{prime}} data exist for this reaction channel. The kinematically complete experiment was performed at Jefferson Lab with the CEBAF Large Acceptance Spectrometer (CLAS) using longitudinally polarized electrons at an energy of 1.515 GeV. A partial wave analysis of the data shows generally better agreement with recent phenomenological models of pion electroproduction compared to the previously measured {pi}{sup 0} p channel. A fit to both {pi}{sup 0} p and {pi}{sup +} n channels using a unitary isobar model suggests the unitarized Born terms provide a consistent description of the non-resonant background. The t-channel pion pole term is important in the {pi}{sup 0} p channel through a rescattering correction, which could be model-dependent.
- 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:
- 826071
- Report Number(s):
- JLAB-PHY-04-25; DOE/ER/40150-2816; nucl-ex/0407013; TRN: US0402991
- 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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