Abstract
Differential cross sections for electrons scattered inelastically from hydrogen have been measured at 18°, 26°, and 34°. The range of incident energy was 4.5 to 18 GeV, and the range of four-momentum transfer squared was 1.5 to 21 . With the use of these data in conjunction with previously measured data at 6° and 10°, the contributions from the longitudinal and transverse components of the exchanged photon have been separately determined. The values of the ratio of the photoabsorption cross sections are found to lie in the range 0 to 0.5. The question of scaling of and as a function of is discussed, and scaling is verified for a large kinematic range. Also, a new scaling variable which reduces to in the Bjorken limit is introduced which extends the scaling region. The behavior of and is also discussed as a function of and . Various weighted sum rules of are evaluated.
- Received 2 August 1971
DOI:https://doi.org/10.1103/PhysRevD.5.528
©1972 American Physical Society