CLAS physics database search results Measurement E151M1867 EG4 Xiaochao Zheng 2016 cos(theta_pi+) phi(pi+) A_LL Stat. error Syst. error degrees 0.35 66 0.6042 0.9563 0.0473 0.35 270 -1.3787 0.8917 0.0888 0.45 282 -0.6726 0.7759 0.0506 0.55 138 1.0754 0.8984 0.0717 0.55 222 0.4416 0.8523 0.0402 0.55 234 -0.728 0.9374 0.0533 0.65 114 1.4982 0.7478 0.0956 0.65 126 -2.1416 0.6876 0.1332 0.65 138 2.12 0.7769 0.1319 0.65 210 -0.1856 0.9603 0.032 0.65 222 1.669 0.8351 0.1055 0.65 234 -1.6013 0.8683 0.1016 0.75 114 -0.469 0.7145 0.0413 0.75 126 -0.6495 0.7597 0.0495 0.75 138 0.8921 0.8966 0.0618 0.75 198 -1.6639 0.7897 0.1052 0.75 210 0.614 0.6865 0.0478 0.75 222 -0.0676 0.7902 0.0303 0.75 234 0.4866 0.6867 0.0421 0.75 246 -1.5267 0.7085 0.0973 0.75 282 -1.2824 0.8549 0.0833 0.85 90 0.6356 0.7863 0.0488 0.85 102 -0.2061 0.9259 0.0325 0.85 138 -1.0527 0.7813 0.0705 0.85 210 0.3194 0.7902 0.0357 0.85 222 0.5977 0.6581 0.047 0.85 234 1.3825 0.5987 0.089 0.85 246 -0.1183 0.6755 0.0308 0.95 102 0.4463 0.7962 0.0404 0.95 210 0.4636 0.8285 0.0411 0.95 234 -0.2395 0.7618 0.0333 0.95 246 0.5218 0.7195 0.0436