CLAS physics database search results Measurement E151M2188 EG4 Xiaochao Zheng 2016 cos(theta_pi+) phi(pi+) A_LL Stat. error Syst. error degrees 0.05 66 1.3228 0.655 0.1005 0.15 66 -0.7061 0.6936 0.0593 0.35 282 -0.1683 0.7437 0.0324 0.35 294 -0.3382 0.8165 0.0387 0.45 294 -0.4365 0.6944 0.0436 0.55 66 0.6882 0.794 0.0582 0.55 78 0.5857 0.7684 0.052 0.55 90 0.2269 0.7973 0.0342 0.55 270 -1.0318 0.6113 0.0806 0.55 282 -0.0067 0.7006 0.03 0.55 294 0.2757 0.6914 0.0361 0.65 66 -0.1966 0.6133 0.0332 0.65 78 -0.2237 0.6855 0.0341 0.65 102 -0.6001 0.825 0.0529 0.65 270 1.1946 0.6472 0.0917 0.65 282 -0.9611 0.6074 0.0759 0.65 294 0.7228 0.5998 0.0604 0.75 66 1.079 0.5936 0.0838 0.75 78 0.081 0.6228 0.0306 0.75 90 0.5753 0.7658 0.0514 0.75 102 -0.0768 0.7375 0.0305 0.75 258 -0.9732 0.6767 0.0767 0.75 270 0.044 0.6718 0.0302 0.75 282 -0.1226 0.6178 0.0313 0.75 294 -0.8052 0.6176 0.0656 0.75 306 0.2003 0.6787 0.0333 0.85 54 -0.183 0.7081 0.0328 0.85 66 1.3728 0.6505 0.104 0.85 78 -1.4705 0.5648 0.1108 0.85 90 0.4417 0.6281 0.0439 0.85 102 -0.8103 0.7003 0.066 0.85 246 1.2925 0.7534 0.0984 0.85 258 -0.9245 0.7141 0.0734 0.85 270 -0.8521 0.5467 0.0687 0.85 282 -0.1577 0.6581 0.0321 0.85 294 0.2601 0.707 0.0354 0.85 318 -0.302 0.6134 0.0371 0.95 114 -0.734 0.8117 0.0611 0.95 270 1.0319 0.6258 0.0806 0.95 282 -0.282 0.692 0.0363 0.95 294 -0.589 0.5732 0.0522