CLAS physics database search results Measurement E46M132 N/A 0 cos(theta_HS^pi+) dsigma/dcos(theta_HS^pi+) Data errors dimensionless mcb mcb -0.875 1.132029 0.45571 -0.625 0.446186 0.180637 -0.375 0.39626 0.100821 -0.125 0.322727 0.090846 0.125 0.326222 0.085476