Recent Measurements of Longitudinal and Transverse Unpolarized Structure Functions, and Their Impact on Spin Asymmetry Measurements

Abstract

New measurements are presented of the separated longitudinal and transverse proton structure functions in the nucleon resonance region (1 < W2 < 4 GeV2), spanning the four‐momentum transfer range 0.2 < Q2 < 4.0 (GeV/c)2. The results are from Jefferson Lab experiment E94‐110, which measured unpolarized inclusive electron‐proton cross sections in Hall C for the purpose of performing Rosenbluth‐type separations. Results of the analysis of the data are presented, as well as a discussion of their non‐trivial relevance to spin asymmetry measurements.