CLAS physics database search results Measurement E151M1880 EG4 Xiaochao Zheng 2016 cos(theta_pi+) phi(pi+) A_LL Stat. error Syst. error degrees 0.35 270 0.8821 0.826 0.0613 0.35 282 0.5604 0.8047 0.0453 0.45 78 0.9344 0.8842 0.0641 0.45 126 -0.1411 0.9972 0.0312 0.45 270 0.5826 0.7144 0.0463 0.45 282 -0.3596 0.8935 0.0371 0.55 114 0.9742 0.9232 0.0662 0.55 126 -1.6671 0.785 0.1054 0.55 210 -0.398 0.9556 0.0385 0.55 258 0.3268 0.9388 0.0359 0.55 270 -1.2488 0.8139 0.0814 0.55 282 0.1314 0.802 0.031 0.65 114 1.8148 0.7068 0.114 0.65 126 -0.6997 0.8177 0.0519 0.65 138 -1.4833 0.6983 0.0948 0.65 210 -1.3276 0.764 0.0859 0.65 234 -1.0403 0.7768 0.0698 0.65 282 1.4275 0.7594 0.0916 0.65 294 -0.214 0.8073 0.0327 0.75 66 -1.213 0.8674 0.0794 0.75 126 -1.0811 0.8701 0.0721 0.75 138 0.2471 0.7451 0.0335 0.75 198 -1.4496 0.7501 0.0928 0.75 210 0.6814 0.9158 0.051 0.75 222 -0.7293 0.732 0.0534 0.75 234 0.8333 0.7254 0.0587 0.75 246 0.4195 0.8132 0.0393 0.75 270 -0.446 0.776 0.0404 0.75 282 -1.0622 0.7065 0.071 0.75 294 -1.1406 0.6539 0.0753 0.85 102 -0.2058 0.7581 0.0325 0.85 114 -0.2591 0.8925 0.0339 0.85 126 0.4894 0.9563 0.0422 0.85 198 0.2541 0.8544 0.0337 0.85 210 -0.8162 0.6985 0.0578 0.85 222 -0.7465 0.6553 0.0543 0.85 234 -1.4071 0.6257 0.0904 0.85 246 -2.0541 0.6562 0.128 0.95 234 0.8033 0.7789 0.0572 0.95 246 -0.1541 0.7976 0.0314