CLAS physics database search results Measurement E19M26 E89-004 R. A. Schumacher 2005 cos(theta) Cz Data errors dimensionless dimensionless dimensionless -0.7 0.922 0.979 -0.4 0.732 0.951 -0.1 -1.261 0.881 0.2 -0.738 0.562 0.5 -0.308 0.383 0.8 -0.348 0.341