CLAS physics database search results Measurement E151M2363 EG4 Xiaochao Zheng 2016 cos(theta_pi+) phi(pi+) A_LL Stat. error Syst. error degrees 0.55 102 -0.9768 0.9244 0.0769 0.55 114 -0.5055 0.9731 0.0474 0.65 102 0.0103 0.8815 0.03 0.65 114 0.0424 0.86 0.0302 0.65 126 -0.4065 0.9316 0.0421 0.65 186 1.327 1.0593 0.1008 0.65 210 -0.4126 0.9784 0.0424 0.65 234 -0.7274 1.0281 0.0607 0.65 282 0.3108 0.9137 0.0375 0.65 294 -0.3525 0.8974 0.0394 0.75 78 -0.3205 0.9872 0.0379 0.75 90 0.2426 0.8371 0.0348 0.75 114 0.8489 1.0507 0.0685 0.75 126 1.1229 0.7755 0.0868 0.75 138 -0.0528 1.0467 0.0302 0.75 186 -0.1292 1.0125 0.0314 0.75 198 -1.7053 0.7218 0.1272 0.75 210 0.7056 0.791 0.0593 0.75 222 -0.9636 0.8034 0.076 0.75 234 0.5976 1.008 0.0527 0.75 282 -0.7518 0.9714 0.0622 0.75 294 -0.5006 0.8199 0.0471 0.85 66 1.836 0.9045 0.1365 0.85 78 0.3595 0.7188 0.0397 0.85 90 -0.2423 0.7848 0.0348 0.85 102 -0.079 0.9003 0.0305 0.85 162 0.4748 1.0709 0.0457 0.85 186 -0.5325 0.9251 0.0489 0.85 198 -0.8606 0.7817 0.0692 0.85 210 -1.1622 0.6812 0.0895 0.85 222 -0.3886 0.6719 0.0412 0.85 234 1.245 0.5919 0.0951 0.85 246 0.1736 0.735 0.0325 0.85 258 -1.1082 0.9933 0.0858 0.95 90 1.0099 0.8834 0.0791 0.95 174 -1.5796 0.8396 0.1184 0.95 186 -0.3196 0.79 0.0379 0.95 198 -0.2434 0.7048 0.0348 0.95 210 0.2448 0.7196 0.0349 0.95 222 -0.215 0.6587 0.0338 0.95 234 -0.2801 0.6593 0.0362 0.95 246 0.611 0.5866 0.0535 0.95 258 0.0187 0.7644 0.03 0.95 270 0.112 0.7664 0.0311