CLAS physics database search results Measurement E46M133 N/A 0 cos(theta_HS^pi+) dsigma/dcos(theta_HS^pi+) Data errors dimensionless mcb mcb -0.875 1.368552 0.363989 -0.625 0.595041 0.15531 -0.375 0.496653 0.147441 -0.125 0.48022 0.128043 0.125 0.452599 0.126246 0.375 0.467309 0.140276 0.625 0.382164 0.103686