CLAS physics database search results Measurement E151M1491 EG4 Xiaochao Zheng 2016 cos(theta_pi+) phi(pi+) A_LL Stat. error Syst. error degrees 0.45 270 0.9133 0.5987 0.0619 0.55 258 2.0443 2.0443 0.1226 0.65 258 2.1363 2.1363 0.1278 0.65 270 0.0725 0.9708 0.0303 0.75 102 0.5255 1.1247 0.0428 0.75 114 -0.7891 1.0899 0.0548 0.75 126 0.1648 0.9509 0.0315 0.75 246 1.0358 0.8689 0.0673 0.75 258 0.9069 1.0209 0.0607 0.75 270 1.3247 0.7354 0.0827 0.75 294 -0.4114 0.8425 0.0384 0.85 66 -0.3139 1.1303 0.0351 0.85 90 -1.2458 0.8877 0.0784 0.85 102 -0.4712 0.8602 0.0406 0.85 114 0.8491 0.8223 0.0578 0.85 126 1.248 0.8706 0.0785 0.85 138 1.3609 0.894 0.0846 0.85 150 -0.8058 0.9313 0.0556 0.85 258 2.0664 2.0664 0.1238 0.85 270 2.243 2.243 0.1338 0.85 282 -0.3427 0.9467 0.036 0.85 306 2.6256 2.6256 0.1556 0.95 114 0.8342 0.7436 0.057 0.95 174 2.1558 2.1558 0.1289 0.55 270 -0.3658 0.7463 0.0372 0.55 282 1.016 0.7187 0.0679 0.65 270 -0.1873 0.6588 0.032 0.65 282 1.0536 0.7675 0.0699 0.75 114 -0.2681 0.7917 0.034 0.75 126 0.06 0.8072 0.0302 0.75 246 0.3563 0.6739 0.0368 0.75 258 0.2673 0.8011 0.034 0.75 270 -0.5346 0.7193 0.0439 0.75 294 1.3194 0.6385 0.0846 0.85 102 2.7841 2.7841 0.1695 0.85 114 0.0609 0.6452 0.0302 0.85 126 1.6223 0.5933 0.1018 0.85 138 -0.8578 0.8075 0.0595 0.85 258 0.0383 0.696 0.0301 0.85 270 1.5725 0.6539 0.0989 0.85 282 0.9397 0.6478 0.0638 0.85 294 -0.0649 0.6321 0.0303 0.95 66 -0.5786 0.6902 0.0459 0.95 114 0.0502 0.6332 0.0302 0.95 150 -0.0296 0.68 0.0301