CLAS physics database search results Measurement E216M350 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 1.94478 0.0902433 0.21264365 27 1.87178 0.0454558 0.16216194 45 1.6891 0.0326449 0.1373973 63 1.6785 0.0380945 0.13503423 81 1.86562 0.0533676 0.137059 99 1.72212 0.0508649 0.12437841 117 1.65556 0.0404389 0.13416767 135 1.42355 0.0778463 0.14141957 153 1.24416 0.0639447 0.21723765 171 0.99626 0.00975524 0.59838156