CLAS physics database search results Measurement E43M3 eg1b H.Avakian 2000 x A_UL^sin2phi Data errors Systematic errors dimensionless dimensionless dimensionless dimensionless 0.15 -0.056 0.045 0.034 0.21 -0.069 0.03 0.021 0.27 -0.052 0.026 0.02 0.33 -0.029 0.034 0.009 0.41 -0.071 0.051 0.017