CLAS physics database search results Measurement E151M1428 EG4 Xiaochao Zheng 2016 cos(theta_pi+) phi(pi+) A_LL Stat. error Syst. error degrees 0.55 270 -1.1179 0.409 0.0734 0.55 282 -0.1878 0.4487 0.032 0.65 270 -0.413 0.4462 0.0389 0.65 282 -0.3378 0.5285 0.0362 0.75 246 0.5047 0.6107 0.0426 0.75 258 0.1123 0.5344 0.0307 0.75 270 0.3087 0.4814 0.0352 0.75 282 0.4424 0.6161 0.04 0.85 126 -1.1547 0.5824 0.0754 0.85 138 -1.5394 0.4784 0.097 0.85 150 0.9871 0.5711 0.0663 0.85 162 -0.1103 0.58 0.0307 0.85 174 -0.4393 0.5793 0.0399 0.85 198 -0.7891 0.5697 0.056 0.85 210 -0.9867 0.5603 0.0663 0.85 258 0.3647 0.5456 0.0371 0.85 270 0.4728 0.508 0.0413 0.95 126 -0.2346 0.5146 0.0331 0.95 150 0.8582 0.5036 0.0595 0.95 162 0.7812 0.495 0.0556 0.95 174 0.7385 0.4624 0.0535 0.95 186 -0.0702 0.4837 0.0303 0.95 198 0.4374 0.4297 0.0398 0.45 282 -0.1679 0.7536 0.0315 0.55 270 -0.439 0.7621 0.0394 0.55 282 0.4054 0.6471 0.0382 0.65 258 -1.2785 0.5136 0.0802 0.65 270 0.4699 0.591 0.0406 0.65 282 -0.1239 0.7399 0.0309 0.75 258 -1.0757 0.4002 0.0694 0.75 270 0.8242 0.529 0.0565 0.75 282 0.5238 0.8148 0.0428 0.85 126 0.6975 0.6597 0.0504 0.85 138 0.9218 0.5153 0.0614 0.85 150 0.882 0.6752 0.0594 0.85 162 -0.3713 0.7287 0.037 0.85 174 -0.5081 0.6639 0.0421 0.85 186 -1.0959 0.5691 0.0704 0.85 210 -0.2163 0.728 0.0325 0.95 138 -0.6006 0.5332 0.046 0.95 150 -0.4292 0.6582 0.039 0.95 162 -0.2781 0.5825 0.0341 0.95 174 1.1534 0.4639 0.0735 0.95 186 -0.46 0.74 0.0402 0.95 198 0.7225 0.6941 0.0516 0.95 210 0.0203 0.6643 0.03