CLAS physics database search results Measurement E216M547 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 0.820457 0.068304 0.09874722 27 0.923084 0.0920446 0.10279988 45 0.650352 0.0327276 0.05314458 63 0.558452 0.0283394 0.05264517 81 0.492969 0.0285738 0.06216286 99 0.466319 0.0410029 0.03712202 117 0.442343 0.0321978 0.04402386 135 0.406537 0.0203517 0.03369187 153 0.4887 0.0353758 0.03868251 171 0.539262 0.0762981 0.05365961