CLAS physics database search results Measurement E151M1472 EG4 Xiaochao Zheng 2016 cos(theta_pi+) phi(pi+) A_LL Stat. error Syst. error degrees 0.55 270 0.1424 0.5559 0.0542 0.65 258 0.4447 0.7218 0.0401 0.65 282 0.5909 0.6814 0.0464 0.75 114 0.101 0.6834 0.0306 0.75 258 -0.2813 0.7233 0.0344 0.75 270 0.4152 0.6985 0.039 0.75 294 -0.9638 0.6697 0.0651 0.85 90 0.7066 0.718 0.0519 0.85 114 -0.2405 0.6725 0.0333 0.85 126 0.7145 0.6456 0.0523 0.85 138 0.9036 0.6895 0.0619 0.85 282 -0.7024 0.6632 0.0517 0.95 114 0.4494 0.5787 0.0403 0.95 138 1.0124 0.576 0.0677 0.95 150 0.679 0.5721 0.0506 0.55 282 0.5995 0.7902 0.046 0.65 258 1.368 0.7745 0.085 0.65 270 -0.0916 0.8908 0.0305 0.65 282 0.7823 0.859 0.0545 0.65 294 -0.3196 0.8451 0.0353 0.75 246 -1.6889 0.4633 0.1027 0.75 258 0.3484 0.9844 0.0362 0.75 282 -1.1981 0.7334 0.0759 0.85 90 -0.5043 0.9478 0.042 0.85 102 -0.0057 0.9438 0.03 0.85 126 1.689 0.7758 0.1027 0.85 138 -0.0215 0.94 0.03 0.85 270 -0.8947 0.7403 0.0601 0.85 282 0.3424 0.9186 0.036 0.85 294 1.1167 0.9657 0.0715