CLAS physics database search results Measurement E213M383 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 4.9642 0.2356 0.5598 0.6073 27 3.9124 0.1885 0.5039 0.538 45 3.3338 0.1886 0.4606 0.4977 63 2.6718 0.1649 0.416 0.4474 81 2.4414 0.0879 0.3534 0.3641 99 2.6479 0.0983 0.3752 0.3879 117 2.5519 0.1151 0.3815 0.3985 135 2.1526 0.1209 0.3914 0.4097 153 1.7468 0.161 0.5802 0.6021 171 2.5418 0.0659 1.4438 1.4453