CLAS physics database search results Measurement E151M1620 EG4 Xiaochao Zheng 2016 cos(theta_pi+) phi(pi+) A_LL Stat. error Syst. error degrees 0.55 222 -0.2897 0.6499 0.0431 0.55 234 0.3363 0.5521 0.066 0.55 246 -0.2747 0.5788 0.0465 0.65 138 0.9972 0.8125 0.0653 0.65 150 -0.6581 1.1393 0.0486 0.65 222 -1.5024 0.5601 0.0924 0.65 234 0.0087 0.8812 0.03 0.65 246 -0.0721 0.7239 0.0303 0.65 258 0.5514 0.7863 0.0439 0.75 138 -0.526 1.0004 0.0428 0.75 162 -0.5481 1.0618 0.0438 0.75 222 0.5405 0.853 0.0434 0.75 234 -0.8032 0.7783 0.0555 0.75 246 1.0722 0.7083 0.0692 0.75 258 1.4662 0.711 0.0904 0.85 222 -1.3339 0.6888 0.0832 0.85 234 -0.7007 0.7288 0.0506 0.85 246 1.0278 0.6078 0.0669 0.85 258 0.2198 0.6385 0.0326 0.95 102 -0.1226 1.0531 0.0308 0.95 114 -1.2175 1.0122 0.0769 0.95 222 0.1869 0.821 0.0319 0.95 234 0.4972 0.7644 0.0417 0.95 246 1.5561 0.6276 0.0953 0.95 258 0.8886 0.7058 0.0597 0.55 258 0.0657 0.7989 0.0303 0.65 126 0.0096 0.7043 0.03 0.65 138 -0.0135 0.6896 0.03 0.65 150 0.3483 0.7502 0.0365 0.65 222 1.2393 0.6677 0.0801 0.65 234 0.137 0.624 0.0311 0.65 246 -0.0767 0.6779 0.0303 0.65 258 -0.8179 0.6626 0.0575 0.75 126 -0.8087 0.673 0.057 0.75 138 -1.1267 0.6495 0.0739 0.75 162 -0.1298 0.8875 0.031 0.75 222 0.6881 0.6996 0.051 0.75 234 -0.0493 0.6864 0.0301 0.75 246 -0.0517 0.5413 0.0302 0.75 258 0.3376 0.6368 0.0362 0.85 222 0.028 0.7652 0.03 0.85 234 1.3535 0.7045 0.0865 0.85 246 1.3193 0.6755 0.0846 0.85 258 0.1356 0.6194 0.0311 0.85 270 0.1454 0.6969 0.0312 0.95 114 0.5447 0.6436 0.0443 0.95 234 -0.2245 0.6893 0.0329