CLAS physics database search results Measurement E151M887 EG4 Xiaochao Zheng 2016 cos(theta_pi+) phi(pi+) A_UL Stat. error Syst. error degrees 0.55 126 -0.5692 0.6466 0.0605 0.55 270 -0.2919 0.6249 0.0403 0.55 282 0.2079 0.6677 0.0356 0.65 114 0.0305 0.8208 0.0301 0.65 294 0.0829 0.623 0.031 0.75 126 0.079 0.8546 0.0309 0.75 210 -0.7073 0.7041 0.0718 0.75 234 0.2865 0.7265 0.04 0.75 282 0.3436 0.5734 0.0437 0.85 102 -0.9113 0.6881 0.0893 0.85 114 -0.1157 0.8921 0.0318 0.85 210 0.4579 0.7898 0.0518 0.85 222 -0.0888 0.7031 0.0311 0.85 234 0.9377 0.74 0.0916 0.95 234 1.6756 2.4628 0.1575 0.45 78 -0.728 0.5893 0.0564 0.45 270 0.956 0.6853 0.0695 0.45 282 0.2098 0.7025 0.033 0.55 114 -0.974 0.6234 0.0706 0.65 126 0.1018 0.7691 0.0307 0.65 138 -0.7418 0.7821 0.0572 0.65 222 0.8942 0.6878 0.0659 0.65 294 1.0542 0.7175 0.0754 0.75 114 0.4445 0.7642 0.0418 0.75 126 -0.3652 0.7016 0.0384 0.75 222 1.6107 0.899 0.1099 0.75 234 0.672 0.8771 0.0533 0.75 282 -0.7425 0.549 0.0572 0.75 294 -0.1126 0.7034 0.0309 0.85 90 -0.8133 0.7586 0.0612 0.85 102 -0.8073 0.6775 0.0609 0.85 198 0.6971 0.8775 0.0547 0.85 210 0.6329 0.7696 0.0512 0.85 222 1.6614 0.7103 0.1131 0.85 234 0.6565 0.92 0.0525 0.85 246 -0.9738 0.6887 0.0706 0.95 246 2.0642 1.2783 0.1387