CLAS physics database search results Measurement E216M781 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 0.293942 0.0597526 0.04354555 27 0.234129 0.0342801 0.02475792 45 0.17393 0.020661 0.01960238 63 0.196446 0.025135 0.02465178 81 0.169364 0.0231811 0.015397 99 0.126125 0.0123556 0.01247909 117 0.121214 0.0121895 0.01278625 135 0.13361 0.0208807 0.01687691 153 0.18359 0.0214329 0.01846377 171 0.198059 0.0398741 0.02227596