CLAS physics database search results Measurement E216M917 CLAS12 Run Group A Krishna Chandra 2018 theta(pi+) dsigma/d(−cos(theta_pip)) Stat. error Syst. error deg mcbn/rad mcbn/rad mcbn/rad 9 0.182406 0.0976281 0.02744072 27 0.103616 0.0194553 0.01023736 45 0.134955 0.018974 0.01253314 63 0.0829694 0.0113405 0.0106877 81 0.121568 0.0140624 0.01224795 99 0.123207 0.0169376 0.01653417 117 0.0577744 0.0485673 0.01186554 135 0.0717518 0.0287109 0.01942515 153 0.0751316 0.0174543 0.03539209 171 0.0891489 8.003e-05 0.05778625