CLAS physics database search results Measurement E151M2383 EG4 Xiaochao Zheng 2016 cos(theta_pi+) phi(pi+) A_LL Stat. error Syst. error degrees 0.55 102 -2.0988 1.0032 0.1551 0.55 114 -0.0117 1.0109 0.03 0.55 126 -1.8804 0.9465 0.1396 0.55 198 -0.4511 1.1066 0.0444 0.55 258 -0.2703 1.071 0.0358 0.55 270 -1.3692 0.9379 0.1037 0.65 114 0.2305 1.0569 0.0343 0.65 126 0.0407 0.8652 0.0301 0.65 138 -1.8796 1.036 0.1396 0.65 174 -0.3806 1.1424 0.0408 0.65 186 -0.422 1.0853 0.0429 0.65 198 -1.6948 0.9887 0.1265 0.65 210 1.4435 0.92 0.1089 0.65 270 2.4054 0.7815 0.177 0.65 282 -0.2813 0.9057 0.0363 0.75 90 0.6672 1.1008 0.0569 0.75 102 0.0766 1.0622 0.0305 0.75 114 2.5609 0.6361 0.1881 0.75 126 -0.702 1.1203 0.0591 0.75 186 -0.0852 0.9031 0.0306 0.75 198 -1.0443 0.7891 0.0814 0.75 210 -1.8976 0.9672 0.1408 0.75 222 -0.2156 0.8823 0.0338 0.75 234 1.514 0.8676 0.1138 0.75 270 0.6518 0.7728 0.056 0.75 282 -0.6519 0.8086 0.056 0.85 90 -1.3744 1.1249 0.1041 0.85 102 -0.437 0.6949 0.0436 0.85 114 -0.4043 0.696 0.0419 0.85 126 -1.116 0.9598 0.0863 0.85 138 0.6601 1.0635 0.0565 0.85 174 0.3269 0.9729 0.0382 0.85 186 0.2642 0.7464 0.0356 0.85 198 -0.8937 0.7924 0.0714 0.85 210 -1.442 0.7224 0.1088 0.85 222 -0.9616 0.7287 0.0759 0.85 234 -0.3655 0.9597 0.04 0.85 270 0.3945 0.8618 0.0415 0.85 282 0.3344 1.0061 0.0386 0.95 198 0.5183 1.0299 0.0481 0.95 210 0.1495 0.9008 0.0319