CLAS physics database search results Measurement E46M152 N/A 0 cos(theta_HS^pi+) dsigma/dcos(theta_HS^pi+) Data errors dimensionless mcb mcb -0.875 0.655251 0.18676 -0.625 0.302992 0.150092 -0.375 0.113912 0.048332 -0.125 0.135048 0.046826 0.125 0.168095 0.053639 0.375 0.117341 0.041955 0.625 0.153312 0.051736 0.875 0.09462 0.064344