CLAS physics database search results Measurement E216M556 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 0.967374 0.0837961 0.1250914 27 0.94006 0.0473313 0.09209914 45 0.854209 0.0430793 0.07426211 63 0.794565 0.0317597 0.06520079 81 0.647284 0.0244301 0.05941204 99 0.587334 0.0215371 0.05360649 117 0.758453 0.117863 0.11077091 135 0.637321 0.0337997 0.05854857 153 0.664737 0.056796 0.06190446 171 0.585468 0.0784012 0.0602927