CLAS physics database search results Measurement E46M143 N/A 0 cos(theta_HS^pi+) dsigma/dcos(theta_HS^pi+) Data errors dimensionless mcb mcb -0.875 0.595858 0.188167 -0.625 0.245609 0.075457 -0.375 0.153758 0.08328 -0.125 0.207387 0.058501 0.125 0.198806 0.058266 0.375 0.190211 0.069522 0.625 0.131395 0.044662 0.875 0.125109 0.045868