CLAS physics database search results Measurement E151M1705 EG4 Xiaochao Zheng 2016 cos(theta_pi+) phi(pi+) A_LL Stat. error Syst. error degrees 0.45 66 0.3655 0.6261 0.0373 0.45 282 -0.0098 0.5945 0.03 0.55 270 0.6391 0.6226 0.049 0.55 282 0.3711 0.5847 0.0375 0.65 270 -0.6632 0.4888 0.0501 0.65 282 0.8517 0.4939 0.0597 0.65 294 -0.174 0.5684 0.0318 0.75 90 -0.5999 0.6642 0.0471 0.75 102 0.9592 0.5663 0.0654 0.75 258 0.4499 0.6204 0.0405 0.75 270 0.0305 0.6047 0.0301 0.75 294 -0.5605 0.5719 0.0453 0.85 78 0.0196 0.5437 0.03 0.85 90 0.8302 0.4703 0.0586 0.85 102 -0.3855 0.5381 0.038 0.85 114 -0.5487 0.4956 0.0448 0.85 126 0.0297 0.6462 0.0301 0.85 258 1.2668 0.491 0.0824 0.85 270 -0.7015 0.4952 0.052 0.85 282 0.1806 0.6293 0.0319 0.85 294 -0.1548 0.599 0.0314 0.95 90 1.0001 0.5198 0.0676 0.95 102 0.1549 0.517 0.0314 0.95 114 0.7497 0.5027 0.0544 0.95 138 1.4974 0.4245 0.0956