CLAS physics database search results Measurement E213M599 E1-6, 2025 R.W. Gothe, A. Trivedi 2001 theta(pi+) dsigma/d(−cos(theta_pip)) Stat. error Syst. error Total error deg mcb/rad mcb/rad mcb/rad mcb/rad 9 3.3924 0.178 0.3957 0.5684 27 2.979 0.1257 0.353 0.5011 45 2.2019 0.1648 0.3062 0.4391 63 2.3718 0.1076 0.3014 0.32 81 2.263 0.0853 0.2989 0.4201 99 2.5992 0.0879 0.3192 0.4506 117 2.3947 0.1077 0.3032 0.432 135 1.8048 0.1088 0.3067 0.4352 153 1.628 0.1372 0.5988 0.8491 171 2.1405 0.0045 1.2682 1.7909