CLAS physics database search results Measurement E216M727 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 0.563305 0.0722395 0.06581378 27 0.575376 0.0884652 0.0795761 45 0.567625 0.0281539 0.04455017 63 0.563185 0.0317407 0.04257259 81 0.540943 0.0208315 0.04127486 99 0.444884 0.0227666 0.03406882 117 0.419196 0.023254 0.04170814 135 0.361973 0.0158665 0.03564134 153 0.335503 0.0290268 0.03511886 171 0.386345 0.0290255 0.04411446