CLAS physics database search results Measurement E46M164 N/A 0 Q^2 R_rho Data errors GeV2 dimensionless dimensionless 2.35 2.943532 1.011902 2.65 1.767701 0.712796 2.95 1.929319 0.81588 3.35 1.717615 0.918851 3.807 4.361756 2.763184