CLAS physics database search results Measurement E216M242 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 3.03823 0.0733973 0.27988009 27 2.48569 0.045842 0.21984544 45 2.08878 0.0343391 0.16993532 63 1.87847 0.0383385 0.15177366 81 1.89992 0.0475921 0.14443872 99 1.8843 0.0323218 0.13961101 117 1.88432 0.0338504 0.15320372 135 1.71994 0.0411551 0.1508042 153 1.8778 0.0747796 0.21123719 171 1.26839 0.0138244 0.73483213