CLAS physics database search results Measurement E151M2080 EG4 Xiaochao Zheng 2016 cos(theta_pi+) phi(pi+) A_LL Stat. error Syst. error degrees 0.35 78 0.7588 0.5555 0.0643 0.55 78 -1.0081 0.9718 0.0974 0.55 114 -0.509 1.0335 0.0556 0.55 126 1.5678 0.9758 0.1472 0.55 282 -1.1228 0.8428 0.1075 0.65 126 0.1 1.1974 0.0314 0.65 138 0.1786 1.0092 0.0342 0.65 222 -0.6121 0.9245 0.0638 0.75 114 -0.2407 1.2772 0.0373 0.75 138 1.2562 1.0829 0.1193 0.75 210 0.1453 1.1406 0.0328 0.75 234 -0.2972 1.0814 0.0406 0.75 282 -0.4948 0.9215 0.0545 0.85 102 -2.2746 1.3083 0.2112 0.85 114 -0.6091 1.2537 0.0635 0.85 222 -0.9279 1.109 0.0904 0.85 234 0.6959 1.0102 0.0706 0.45 66 -0.521 0.7611 0.0453 0.45 270 -0.7737 0.8464 0.0586 0.45 282 -0.0413 0.8289 0.0301 0.55 114 -1.175 0.6873 0.0821 0.55 138 -1.8058 0.7755 0.1212 0.55 282 -1.1615 0.6996 0.0813 0.65 126 0.0839 0.9185 0.0305 0.65 150 0.8394 0.8379 0.0623 0.65 210 -1.1838 0.9057 0.0826 0.65 222 -0.3277 0.9716 0.0368 0.65 270 0.0365 0.8487 0.0301 0.75 126 0.6707 0.9124 0.0529 0.75 138 -1.0429 0.8243 0.0742 0.75 210 -0.5811 1.0529 0.0483 0.75 222 -0.82 0.9192 0.0612 0.75 234 -0.3624 0.8981 0.0382 0.75 282 -0.3077 0.8783 0.0361 0.85 102 0.1119 0.9486 0.0309 0.85 114 -0.3874 0.8054 0.0392 0.85 210 1.3822 0.9215 0.0948 0.85 222 -0.0537 0.9372 0.0302 0.85 234 1.8886 0.9797 0.1265