CLAS physics database search results Measurement E151M1324 EG4 Xiaochao Zheng 2016 cos(theta_pi+) phi(pi+) A_LL Stat. error Syst. error degrees 0.45 42 -0.107 0.993 0.0323 0.55 42 1.2598 0.7761 0.1452 0.55 54 -2.1026 0.7228 0.239 0.55 222 1.4851 0.6749 0.1702 0.55 234 0.1485 0.821 0.0344 0.55 246 -0.3217 0.5987 0.0471 0.65 30 0.4575 0.9026 0.0597 0.65 42 0.4804 0.7695 0.0619 0.65 54 -0.6992 0.6909 0.0844 0.65 162 -0.1654 0.8952 0.0353 0.65 210 -0.1668 0.915 0.0354 0.65 222 1.0012 0.7659 0.1168 0.65 234 0.2696 0.5314 0.0427 0.65 246 0.0829 0.5307 0.0314 0.65 258 0.9164 0.8711 0.1076 0.75 42 -1.3182 0.7857 0.1517 0.75 54 -0.726 0.8172 0.0872 0.75 150 -1.0767 0.7656 0.1251 0.75 210 0.5347 0.8741 0.0674 0.75 222 -1.1565 0.7467 0.1338 0.75 234 -0.2382 0.6088 0.0403 0.75 246 0.403 0.6817 0.0545 0.75 258 -0.0329 0.8838 0.0302 0.85 138 1.4966 0.7707 0.1714 0.85 222 0.183 0.5999 0.0364 0.85 234 -0.5737 0.6457 0.0713 0.85 246 0.0213 0.6821 0.0301