CLAS physics database search results Measurement E216M260 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 0.853474 0.175071 0.1990178 27 0.645785 0.0544221 0.05823677 45 0.631685 0.0388739 0.04902494 63 0.576783 0.0346854 0.04524232 81 0.526167 0.028805 0.04294386 99 0.492953 0.0255434 0.05643185 117 0.581941 0.0330657 0.13460456 135 0.42076 0.0288203 0.15494653 153 0.586497 0.0047916 0.31394588 171 0.74932 0.00124916 0.41345788