CLAS physics database search results Measurement E151M1866 EG4 Xiaochao Zheng 2016 cos(theta_pi+) phi(pi+) A_LL Stat. error Syst. error degrees 0.35 294 -0.7789 0.9198 0.0559 0.45 78 0.6855 0.8252 0.0512 0.45 126 -2.1826 0.7593 0.1356 0.45 282 0.9069 0.8135 0.0626 0.55 114 0.4607 0.9397 0.041 0.55 126 -0.3505 0.838 0.0368 0.55 270 -0.0209 0.9247 0.03 0.55 282 -1.2554 0.6696 0.0818 0.65 102 -1.2772 0.9427 0.083 0.65 114 -0.3069 0.7715 0.0353 0.65 126 -0.1186 0.7273 0.0308 0.65 138 -0.2091 0.9063 0.0326 0.65 198 0.1856 0.9841 0.032 0.65 222 1.2296 0.6615 0.0803 0.65 234 -0.7994 0.667 0.057 0.65 294 1.0084 0.7534 0.0681 0.75 114 -0.0425 0.7859 0.0301 0.75 126 0.0134 0.7532 0.03 0.75 138 -0.2627 0.782 0.034 0.75 150 -0.2235 0.8698 0.0329 0.75 210 0.0929 0.8026 0.0305 0.75 222 0.4338 0.6987 0.0399 0.75 234 0.3382 0.6168 0.0363 0.75 246 1.1462 0.7468 0.0757 0.75 282 -0.1209 0.6807 0.0309 0.75 294 -0.1857 0.8098 0.032 0.85 90 -0.7739 0.8379 0.0557 0.85 114 1.5977 0.7666 0.1014 0.85 126 0.163 0.9195 0.0316 0.85 210 -1.7257 0.702 0.1088 0.85 222 -1.2204 0.6323 0.0798 0.85 234 -0.2029 0.651 0.0324 0.85 246 1.1367 0.6655 0.0751 0.95 114 -0.7906 0.7959 0.0565 0.95 222 0.1717 0.6924 0.0318 0.95 234 1.1203 0.7073 0.0742