CLAS physics database search results Measurement E151M1632 EG4 Xiaochao Zheng 2016 cos(theta_pi+) phi(pi+) A_LL Stat. error Syst. error degrees 0.45 18 -0.1027 0.8982 0.0306 0.45 30 1.827 0.8653 0.1135 0.45 42 0.2129 0.8736 0.0326 0.55 138 -0.9022 0.8206 0.0618 0.55 150 -1.2591 0.8446 0.0812 0.55 222 1.1917 0.8704 0.0775 0.55 234 -1.2532 0.7947 0.0809 0.55 246 -0.651 1.01 0.0492 0.65 138 0.5619 0.7457 0.0451 0.65 150 -0.5522 0.8398 0.0447 0.65 210 -0.4414 0.7627 0.04 0.65 222 -1.1095 0.7851 0.073 0.65 234 -0.7667 0.7196 0.0549 0.75 150 0.9612 0.8041 0.065 0.75 162 0.4338 0.933 0.0397 0.75 222 0.2385 0.7726 0.0332 0.75 234 -0.2909 0.6955 0.0347 0.75 246 -0.6634 0.6669 0.0498 0.85 222 0.0097 0.7159 0.03 0.85 234 0.7655 0.7274 0.0548 0.85 246 0.181 0.6823 0.0319 0.35 42 -0.1252 1.0366 0.0309 0.55 210 0.7146 1.1494 0.0513 0.55 222 0.8122 1.1972 0.056 0.55 246 -2.5467 2.5467 0.1511 0.65 126 -0.3658 1.1846 0.0368 0.65 138 -1.7776 0.9126 0.1076 0.65 162 0.2838 1.303 0.0342 0.65 222 -0.8941 0.8125 0.06 0.65 234 -1.36 0.8158 0.0846 0.65 246 -0.3674 0.881 0.0368 0.75 162 2.5175 2.5175 0.1494 0.75 210 -2.6254 2.6254 0.1556 0.75 222 0.8572 0.8791 0.0582 0.75 234 0.1391 0.9028 0.0311 0.75 246 0.7474 0.8467 0.0528 0.85 210 -0.4267 1.1065 0.0389 0.85 222 -0.149 0.8426 0.0312 0.85 234 -0.6794 0.9805 0.0496 0.85 246 1.0187 0.7362 0.0664 0.85 258 0.3817 1.0539 0.0373