CLAS physics database search results Measurement E151M883 EG4 Xiaochao Zheng 2016 cos(theta_pi+) phi(pi+) A_UL Stat. error Syst. error degrees 0.45 126 -0.5296 0.7748 0.0459 0.45 270 0.0045 0.7116 0.03 0.55 126 0.2542 0.7937 0.0343 0.55 270 0.9158 0.7257 0.0672 0.55 282 -0.5772 0.6842 0.0483 0.65 126 -0.6624 0.7515 0.0528 0.65 222 0.6057 0.8432 0.0498 0.75 66 -0.3499 0.7168 0.0378 0.75 126 -0.3911 0.7829 0.0395 0.75 138 0.946 0.9365 0.0689 0.75 198 -0.5239 0.8373 0.0456 0.75 210 1.0644 0.7667 0.076 0.75 222 0.0376 0.8075 0.0301 0.75 234 1.2039 0.8192 0.0845 0.75 270 0.56 0.8015 0.0474 0.75 282 -0.6709 0.5711 0.0533 0.85 114 -0.1231 0.7707 0.0311 0.85 210 0.1497 0.8398 0.0316 0.45 282 -0.1468 0.6149 0.0329 0.55 114 -0.5061 0.7738 0.0555 0.55 126 -1.0043 0.6051 0.0974 0.55 270 -0.4493 0.629 0.0512 0.65 114 -1.744 0.6063 0.1637 0.65 138 -0.1427 0.8126 0.0328 0.65 210 1.3739 0.7751 0.1303 0.65 222 0.38 0.765 0.0462 0.75 126 0.2728 0.9193 0.0392 0.75 138 1.5002 0.9882 0.1417 0.75 210 0.6626 0.7926 0.0681 0.75 234 -0.7484 0.6508 0.0753 0.75 282 -0.7947 0.5756 0.0792 0.85 102 0.5181 1.0374 0.0565 0.85 114 -0.9176 0.7908 0.0898 0.85 126 -0.4621 0.8625 0.0521 0.85 210 0.389 0.8418 0.0468 0.85 222 1.8622 0.8467 0.1745 0.85 234 0.6417 0.9244 0.0664