CLAS physics database search results Measurement E151M1570 EG4 Xiaochao Zheng 2016 cos(theta_pi+) phi(pi+) A_LL Stat. error Syst. error degrees 0.55 30 -0.3218 0.8022 0.0357 0.55 42 -1.8736 0.6902 0.1162 0.55 126 2.6885 2.6885 0.1592 0.55 138 -0.488 1.251 0.0413 0.55 150 -0.3365 1.1836 0.0358 0.55 162 -1.4338 0.7911 0.091 0.55 210 -0.3476 1.0629 0.0362 0.55 222 -1.1907 0.5082 0.0926 0.55 234 -0.6613 0.5409 0.0514 0.65 126 -0.591 0.8441 0.0464 0.65 138 -1.7419 0.7347 0.1086 0.65 150 -0.6826 0.8415 0.0507 0.65 210 -0.2917 0.8992 0.0347 0.65 222 -0.2682 0.7376 0.034 0.65 234 0.7666 0.6676 0.0549 0.65 246 0.5315 0.9236 0.0438 0.75 150 -1.8299 0.6375 0.1137 0.75 210 -0.8509 0.9367 0.0592 0.75 222 -0.5231 0.7362 0.0434 0.75 234 -1.6797 0.6386 0.1051 0.75 246 -0.1989 0.8168 0.0323 0.85 210 0.539 0.9158 0.0441 0.85 222 0.4339 0.6675 0.0397 0.85 234 -0.3309 0.6642 0.036 0.55 246 -0.3356 1.0122 0.0358 0.65 138 -0.6607 1.072 0.0487 0.65 210 -1.3332 0.9 0.0831 0.65 222 -0.5476 0.8013 0.0437 0.65 234 0.8832 0.8615 0.0595 0.65 246 -1.0768 0.952 0.0694 0.75 138 -0.8048 0.978 0.0556 0.75 222 0.1126 0.8418 0.0307 0.75 234 -1.3367 0.7682 0.0833 0.75 246 -0.3781 1.0637 0.0372 0.85 210 -0.1268 1.0488 0.0309 0.85 222 0.4 0.969 0.038 0.85 234 -1.2243 0.6382 0.0773 0.85 246 0.1249 1.0418 0.0309