CLAS physics database search results Measurement E216M259 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 0.695661 0.0931286 0.12481502 27 0.545462 0.0484428 0.07706547 45 0.564769 0.0646964 0.06721578 63 0.641764 0.11174 0.09726028 81 0.616816 0.119596 0.09382767 99 0.451458 0.0363567 0.05865213 117 0.743606 0.304648 0.17509866 135 0.468019 0.0437588 0.04515298 153 0.800726 0.0918433 0.07845293 171 0.633936 0.0791743 0.06800166