CLAS physics database search results Measurement E216M772 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 0.125104 0.0353061 0.03096707 27 0.20592 0.0328509 0.03321396 45 0.220013 0.0305036 0.02969697 63 0.169992 0.0204331 0.01745361 81 0.170544 0.0401652 0.0156622 99 0.125699 0.0133307 0.01404046 117 0.126727 0.0143527 0.01361018 135 0.14242 0.0212021 0.01357505 153 0.146862 0.0192025 0.01587771 171 0.131947 0.0314586 0.02266704