CLAS physics database search results Measurement E216M475 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 1.67808 0.0920325 0.18573668 27 1.37967 0.0449105 0.12428167 45 1.33499 0.0453689 0.11119008 63 1.29381 0.0339743 0.10069895 81 1.18376 0.0286142 0.09186639 99 1.03903 0.026139 0.08039678 117 0.886691 0.023797 0.07283954 135 0.873206 0.0304352 0.07592245 153 0.915245 0.0326884 0.0959292 171 1.2621 0.0705685 0.20106631