CLAS physics database search results Measurement E216M493 CLAS12 Run Group A Krishna Chandra 2018 theta(pi-) dsigma/d(−cos(theta_pim)) Stat. error Syst. error deg mcbn/rad mcbn/rad mcbn/rad 9 1.99778 0.0983914 0.23114526 27 1.50422 0.0602975 0.14150136 45 1.31669 0.0381483 0.10188231 63 1.13413 0.0297635 0.087598 81 1.07169 0.0321168 0.07818598 99 0.8666 0.0204874 0.06374784 117 0.819993 0.0242982 0.06260089 135 0.767074 0.022146 0.06087139 153 0.838153 0.060296 0.08466216 171 1.11072 0.0613771 0.19213953