CLAS physics database search results Measurement E46M137 N/A 0 cos(theta_HS^pi+) dsigma/dcos(theta_HS^pi+) Data errors dimensionless mcb mcb -0.875 1.183723 0.317878 -0.625 0.547881 0.144654 -0.375 0.3141 0.085826 -0.125 0.332035 0.092697 0.125 0.332414 0.09125 0.375 0.343984 0.093206 0.625 0.243987 0.073154 0.875 0.302975 0.113386