CLAS physics database search results Measurement E216M665 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 0.327889 0.0455217 0.03034811 27 0.283829 0.0223938 0.02615696 45 0.302016 0.0178236 0.02617313 63 0.24116 0.0144255 0.01968489 81 0.231256 0.0203483 0.02132867 99 0.272998 0.0169792 0.02094428 117 0.202232 0.0185759 0.01935991 135 0.284356 0.068342 0.08487683 153 0.198013 0.0120035 0.09142922 171 0.282565 0.00025551 0.15403638