CLAS physics database search results Measurement E151M2338 EG4 Xiaochao Zheng 2016 cos(theta_pi+) phi(pi+) A_LL Stat. error Syst. error degrees 0.35 270 -0.7643 0.9241 0.063 0.55 90 -0.4099 0.7531 0.0422 0.55 102 1.9122 0.6817 0.1419 0.55 126 -0.6568 1.005 0.0563 0.55 270 -0.2002 0.9794 0.0333 0.55 294 0.1888 0.9176 0.033 0.55 306 -0.3618 0.8291 0.0399 0.65 90 -0.1655 0.8709 0.0323 0.65 102 0.0387 0.7875 0.0301 0.65 114 -0.0264 1.0177 0.0301 0.65 126 0.5637 0.9125 0.0507 0.65 210 0.3275 1.052 0.0383 0.65 234 0.3731 0.8995 0.0404 0.65 246 0.0078 0.9391 0.03 0.65 306 0.2686 0.8567 0.0358 0.75 66 0.7361 0.8609 0.0612 0.75 78 0.5154 0.6689 0.0479 0.75 102 -0.3305 0.7503 0.0384 0.75 114 0.2189 0.8249 0.0339 0.75 126 0.0039 0.9078 0.03 0.75 210 -0.3406 0.8221 0.0389 0.75 222 1.3944 0.858 0.1055 0.75 234 1.256 0.6487 0.0959 0.75 246 -0.5136 0.85 0.0478 0.75 282 -0.3464 0.9758 0.0391 0.75 294 -0.0087 0.8333 0.03 0.85 66 -0.0064 0.6568 0.03 0.85 78 0.6676 0.5669 0.0569 0.85 90 0.7674 0.7535 0.0632 0.85 198 -0.4311 0.8655 0.0433 0.85 210 0.484 0.9731 0.0462 0.85 222 0.3111 0.7336 0.0375 0.85 234 1.3361 0.5912 0.1014 0.85 246 -0.0749 0.6183 0.0305 0.85 258 0.9116 0.6503 0.0726 0.85 270 0.477 0.9191 0.0458 0.95 78 0.0527 0.8039 0.0302 0.95 174 -1.6721 0.8395 0.1249 0.95 186 0.43 0.9664 0.0433 0.95 210 -0.5439 0.769 0.0495 0.95 222 0.7441 0.7643 0.0617 0.95 234 -0.2838 0.6988 0.0364 0.95 246 0.1819 0.6567 0.0328 0.95 258 0.8937 0.6797 0.0714 0.95 270 -0.8048 0.6341 0.0656 0.95 282 0.274 0.6458 0.036 0.95 294 -0.63 0.6565 0.0547 0.95 306 -0.1687 0.8234 0.0324