CLAS physics database search results Measurement E46M154 N/A 0 cos(theta_HS^pi+) dsigma/dcos(theta_HS^pi+) Data errors dimensionless mcb mcb -0.875 0.796064 0.213249 -0.625 0.5232 0.154169 -0.375 0.252973 0.07581 -0.125 0.1847 0.051941 0.125 0.149947 0.05382 0.375 0.203147 0.066393 0.625 0.320845 0.100704 0.875 0.267438 0.129642