CLAS physics database search results Measurement E216M782 CLAS12 Run Group A Krishna Chandra 2018 theta(pi+) dsigma/d(−cos(theta_pip)) Stat. error Syst. error deg mcbn/rad mcbn/rad mcbn/rad 9 0.177095 0.0423868 0.03823569 27 0.177686 0.0232744 0.02079074 45 0.235197 0.0208879 0.02150872 63 0.158908 0.0146727 0.01471094 81 0.152697 0.0140575 0.01488779 99 0.161734 0.0165293 0.0147725 117 0.15404 0.0244325 0.01742857 135 0.173422 0.030647 0.034353 153 0.116732 0.013314 0.06190397 171 0.158361 0.00013728 0.0961504