CLAS physics database search results Measurement E151M2351 EG4 Xiaochao Zheng 2016 cos(theta_pi+) phi(pi+) A_LL Stat. error Syst. error degrees 0.25 282 -0.1154 0.9058 0.0311 0.45 282 -0.2143 0.8527 0.0338 0.55 90 -0.0714 0.914 0.0304 0.55 102 -0.6166 0.7552 0.0538 0.55 234 -1.0201 0.9486 0.0798 0.65 90 0.4826 0.8327 0.0461 0.65 102 -0.6616 0.7447 0.0566 0.65 114 -0.9571 0.7186 0.0756 0.65 126 0.7184 0.8571 0.0601 0.65 210 0.9543 0.8931 0.0754 0.65 234 -0.8758 0.8909 0.0702 0.65 306 0.0774 0.8367 0.0305 0.75 66 -1.0775 0.8308 0.0837 0.75 78 -0.7884 0.6799 0.0646 0.75 90 0.2655 0.8571 0.0356 0.75 114 0.1364 0.6827 0.0316 0.75 126 0.0134 0.785 0.03 0.75 210 0.5314 0.7905 0.0488 0.75 222 -1.3542 0.7325 0.1027 0.75 234 0.4315 0.7999 0.0433 0.75 246 -1.0463 0.7564 0.0816 0.75 258 0.094 0.8018 0.0308 0.85 66 -1.1598 0.6768 0.0893 0.85 78 -0.0181 0.6667 0.03 0.85 90 0.5787 0.8452 0.0516 0.85 102 0.1119 0.851 0.0311 0.85 186 1.4327 0.7101 0.1081 0.85 198 -0.337 0.7772 0.0387 0.85 210 0.1686 0.6817 0.0324 0.85 222 -0.1505 0.7515 0.0319 0.85 234 -0.3607 0.5385 0.0398 0.85 246 0.1456 0.6341 0.0318 0.85 258 -0.8005 0.6411 0.0653 0.95 198 0.5531 0.7653 0.0501 0.95 210 0.4138 0.6721 0.0424 0.95 222 -0.4312 0.7773 0.0433 0.95 234 -0.2076 0.6305 0.0336 0.95 246 -1.885 0.4951 0.1399 0.95 258 -0.1816 0.5808 0.0328 0.95 270 -0.4363 0.6295 0.0436 0.95 282 -0.8113 0.522 0.066 0.95 294 -0.1159 0.7113 0.0312