CLAS physics database search results Measurement E19M28 E89-004 R. A. Schumacher 2005 cos(theta) Cz Data errors dimensionless dimensionless dimensionless -0.7 3.243 1.021 -0.4 2.293 0.819 -0.1 1.311 1.325 0.2 -1.254 0.847 0.5 -0.869 0.394 0.8 0.727 0.446