CLAS physics database search results Measurement E216M548 CLAS12 Run Group A Krishna Chandra 2018 theta(pi+) dsigma/d(−cos(theta_pip)) Stat. error Syst. error deg mcbn/rad mcbn/rad mcbn/rad 9 0.571885 0.0526458 0.0463425 27 0.579525 0.0287025 0.04432667 45 0.539211 0.0226629 0.04171713 63 0.510042 0.0200653 0.03899335 81 0.553156 0.0209057 0.0405599 99 0.565908 0.0289769 0.04213233 117 0.502726 0.0231747 0.04365762 135 0.554638 0.0736697 0.09534792 153 0.359875 0.0201911 0.14173148 171 0.506349 0.00120374 0.25672565