CLAS physics database search results Measurement E46M142 N/A 0 cos(theta_HS^pi+) dsigma/dcos(theta_HS^pi+) Data errors dimensionless mcb mcb -0.875 0.81004 0.213982 -0.625 0.307607 0.096933 -0.375 0.233553 0.068859 -0.125 0.266865 0.076237 0.125 0.272383 0.097053 0.375 0.219914 0.064796 0.625 0.194882 0.060776 0.875 0.191564 0.084052