CLAS physics database search results Measurement E151M1829 EG4 Xiaochao Zheng 2016 cos(theta_pi+) phi(pi+) A_LL Stat. error Syst. error degrees 0.35 78 -0.9715 0.7609 0.0661 0.35 90 1.1521 0.7305 0.076 0.35 270 0.3474 0.7634 0.0366 0.35 282 -0.5464 0.7013 0.0447 0.35 294 -0.5124 0.6497 0.0432 0.45 66 1.5147 0.7038 0.0966 0.45 78 -0.5162 0.5676 0.0433 0.45 90 0.6309 0.5921 0.0486 0.45 270 -0.3532 0.7276 0.0369 0.45 282 0.6104 0.674 0.0476 0.45 294 0.5798 0.7726 0.0462 0.55 78 -0.4022 0.6698 0.0387 0.55 90 -0.3972 0.6926 0.0385 0.55 138 -0.7051 0.753 0.0522 0.55 222 0.0777 0.7251 0.0304 0.55 234 0.779 0.768 0.0559 0.55 270 0.4818 0.6491 0.0419 0.55 282 -0.132 0.5421 0.031 0.55 294 -0.7117 0.6844 0.0525 0.65 78 -1.3971 0.7062 0.0898 0.65 114 0.1226 0.6914 0.0309 0.65 126 -0.2291 0.6474 0.0331 0.65 138 -0.5417 0.6603 0.0445 0.65 150 0.0806 0.7692 0.0304 0.65 198 -0.3412 0.7823 0.0364 0.65 222 -0.1456 0.4932 0.0313 0.65 234 -0.5491 0.603 0.0448 0.65 270 -0.7097 0.7288 0.0524 0.75 78 -0.7727 0.7687 0.0556 0.75 126 -0.4624 0.6029 0.0411 0.75 138 -0.9021 0.6231 0.0624 0.75 210 -0.3836 0.7038 0.038 0.75 222 0.309 0.5221 0.0354 0.75 234 -0.7394 0.6323 0.0539 0.75 246 0.0625 0.687 0.0302 0.75 282 0.7309 0.6254 0.0535 0.85 114 -0.7284 0.8253 0.0534 0.85 210 -0.8955 0.6849 0.062 0.85 222 -1.2089 0.6338 0.0792 0.85 234 -0.1618 0.5958 0.0316