CLAS physics database search results Measurement E216M511 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 0.291255 0.051554 0.04702197 27 0.343239 0.0341427 0.04611528 45 0.32778 0.0358052 0.03982005 63 0.27497 0.0582428 0.03080115 81 0.24586 0.0323842 0.03387199 99 0.252456 0.0238636 0.02471799 117 0.288984 0.0247285 0.02816521 135 0.287905 0.0307892 0.06041247 153 0.302022 0.0331754 0.03219503 171 0.379243 0.0553493 0.04212915