Abstract
Measurements of nucleon resonance cross sections for large angle (14°<θ<61°) electron scattering from deuterium and hydrogen were obtained for incident energies of 2<E0<9.75GeV. Scattered electrons were detected in both the 8 GeV and 1.6 GeV spectrometers in SLAC End Station A. The cross sections were used in conjunction with previous SLAC data to perform Rosenbluth type separations and to measure the longitudinal component of the cross sections. R=σL/σT, the ratio of the longitudinal and transverse components of the cross section, is found to be small throughout the entire resonance region (1<W2<4GeV2). A global fit to all available SLAC resonance region data has been developed. The Delta P33(1232) resonance form factor is extracted and is found to fall off faster than Q−4, but not as fast as had been previously observed.
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