CLAS physics database search results Measurement E213M518 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 3.0521 0.1769 0.384 0.4228 27 2.9056 0.1105 0.3449 0.3621 45 2.913 0.1387 0.3597 0.3855 63 2.6661 0.1072 0.3319 0.3488 81 2.8153 0.0983 0.3467 0.3603 99 2.7994 0.0984 0.3473 0.3609 117 2.6257 0.1328 0.338 0.3631 135 2.2111 0.1136 0.3818 0.5629 153 2.2982 0.155 1.038 1.5529 171 2.9206 0.0042 1.7511 2.4786