CLAS physics database search results Measurement E213M563 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 2.4893 0.1502 0.3145 0.4418 27 2.4403 0.1027 0.2942 0.415 45 2.3215 0.1336 0.301 0.4276 63 2.4048 0.117 0.2974 0.3196 81 2.506 0.1343 0.3158 0.3432 99 2.7597 0.0983 0.3328 0.4746 117 2.3441 0.0959 0.2975 0.4267 135 1.9393 0.1458 0.3321 0.4723 153 1.6724 0.1148 0.6811 0.9658 171 2.1448 0.0029 1.2797 1.812