CLAS physics database search results Measurement E151M1652 EG4 Xiaochao Zheng 2016 cos(theta_pi+) phi(pi+) A_LL Stat. error Syst. error degrees 0.65 138 -0.9035 0.9533 0.0619 0.65 150 -0.1448 0.936 0.0312 0.65 222 0.6777 0.9153 0.0505 0.65 234 0.6861 0.9227 0.0509 0.75 234 0.1165 0.8624 0.0308 0.75 246 -0.2956 0.8578 0.0348 0.85 210 -1.0885 0.9315 0.0718 0.85 222 -1.1212 0.918 0.0736 0.85 246 0.8327 0.7709 0.0582 0.55 210 -1.9712 1.2125 0.1185 0.55 222 -0.453 1.3258 0.0399 0.55 234 -0.85 1.1642 0.0578 0.65 138 0.5753 1.3471 0.0449 0.65 150 0.5863 1.2806 0.0454 0.65 222 1.0877 0.928 0.07 0.65 234 -0.3364 1.2128 0.0358 0.75 234 -2.0647 0.5845 0.1237 0.75 246 -0.0965 1.0043 0.0305 0.85 126 0.6399 1.2557 0.0478 0.85 222 -0.1193 1.073 0.0308 0.85 246 0.0143 1.121 0.03