CLAS physics database search results Measurement E213M338 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 4.2713 0.2682 0.5258 0.7453 27 4.2704 0.215 0.5221 0.7404 45 3.0006 0.2136 0.4259 0.6078 63 2.9388 0.1226 0.4006 0.568 81 3.3073 0.1768 0.4408 0.6276 99 3.2578 0.1031 0.4275 0.6015 117 3.1851 0.128 0.4275 0.6049 135 2.6415 0.1787 0.4538 0.6452 153 1.7893 0.1491 0.6857 0.9721 171 2.8671 0.0811 1.6835 2.3791