Measurement E151M2980
| Experiment: | EG4 | |
|---|---|---|
| Year: | 2016 | |
| Spokesperson: | Xiaochao Zheng | |
| Reaction: | ep → π+n | |
| Polarization: | beam (longitudinal), target (longitudinal) | |
| Quantity: | ALU | |
| εL: | 0.2571 | |
| Q2: | 0.0844 GeV2 | |
| W: | 1355.0 GeV | |
| Ebeam: | 1.9889 GeV | |
| ε: | 0.9353 | |
| cos(θπ+) | φ(π+), [deg] | ALU | uncertainty |
|---|---|---|---|
| 0.15 | 66.0 | 0.2669 | 0.274 |
| 0.15 | 306.0 | 0.1846 | 0.2321 |
| 0.25 | 66.0 | 0.0311 | 0.1917 |
| 0.25 | 78.0 | -0.2177 | 0.2335 |
| 0.25 | 294.0 | -0.2478 | 0.1803 |
| 0.25 | 306.0 | -0.07 | 0.2286 |
| 0.35 | 66.0 | 0.006 | 0.1679 |
| 0.35 | 78.0 | -0.2842 | 0.1629 |
| 0.35 | 90.0 | 0.3441 | 0.2522 |
| 0.35 | 282.0 | -0.0386 | 0.2127 |
| 0.35 | 294.0 | 0.0341 | 0.1941 |
| 0.35 | 306.0 | 0.2427 | 0.1993 |
| 0.45 | 66.0 | -0.0177 | 0.1817 |
| 0.45 | 78.0 | -0.0429 | 0.1607 |
| 0.45 | 90.0 | 0.1194 | 0.2256 |
| 0.45 | 270.0 | 0.405 | 0.2509 |
| 0.45 | 282.0 | 0.2063 | 0.1928 |
| 0.45 | 294.0 | 0.0277 | 0.1632 |
| 0.45 | 306.0 | 0.5832 | 0.1967 |
| 0.55 | 66.0 | 0.064 | 0.1987 |
| 0.55 | 78.0 | -0.2408 | 0.1929 |
| 0.55 | 90.0 | 0.1199 | 0.2188 |
| 0.55 | 102.0 | 0.0908 | 0.2542 |
| 0.55 | 258.0 | -0.2174 | 0.2267 |
| 0.55 | 270.0 | -0.1602 | 0.2059 |
| 0.55 | 282.0 | -0.0489 | 0.2118 |
| 0.55 | 294.0 | 0.165 | 0.219 |
| 0.65 | 66.0 | 0.3154 | 0.2365 |
| 0.65 | 78.0 | 0.1071 | 0.2179 |
| 0.65 | 90.0 | 0.2584 | 0.2473 |
| 0.65 | 102.0 | 0.1631 | 0.1973 |
| 0.65 | 114.0 | -0.4915 | 0.1763 |
| 0.65 | 126.0 | -0.1097 | 0.1832 |
| 0.65 | 222.0 | -0.3018 | 0.2693 |
| 0.65 | 234.0 | 0.0329 | 0.1994 |
| 0.65 | 246.0 | 0.1814 | 0.1668 |
| 0.65 | 258.0 | -0.3727 | 0.1667 |
| 0.65 | 270.0 | -0.1231 | 0.1881 |
| 0.65 | 282.0 | 0.1924 | 0.2145 |
| 0.75 | 90.0 | -0.0201 | 0.2187 |
| 0.75 | 102.0 | 0.0783 | 0.1626 |
| 0.75 | 114.0 | -0.0671 | 0.1576 |
| 0.75 | 126.0 | 0.014 | 0.1515 |
| 0.75 | 138.0 | -0.3742 | 0.1846 |
| 0.75 | 150.0 | -0.0319 | 0.2201 |
| 0.75 | 222.0 | -0.1113 | 0.1638 |
| 0.75 | 234.0 | -0.0498 | 0.1639 |
| 0.75 | 246.0 | 0.1361 | 0.1297 |
| 0.75 | 258.0 | 0.1101 | 0.1714 |
| 0.75 | 270.0 | 0.0551 | 0.171 |
| 0.75 | 282.0 | -0.4098 | 0.2395 |
| 0.85 | 90.0 | 0.2431 | 0.2693 |
| 0.85 | 102.0 | 0.2176 | 0.1655 |
| 0.85 | 114.0 | 0.0645 | 0.1566 |
| 0.85 | 126.0 | -0.0783 | 0.1443 |
| 0.85 | 138.0 | 0.2485 | 0.1608 |
| 0.85 | 150.0 | -0.1641 | 0.1845 |
| 0.85 | 162.0 | -0.0596 | 0.21 |
| 0.85 | 210.0 | 0.159 | 0.2217 |
| 0.85 | 222.0 | -0.1772 | 0.1745 |
| 0.85 | 234.0 | 0.0232 | 0.1472 |
| 0.85 | 246.0 | 0.0913 | 0.1291 |
| 0.85 | 258.0 | -0.0709 | 0.1595 |
| 0.85 | 270.0 | 0.2036 | 0.1505 |
| 0.85 | 282.0 | -0.0949 | 0.2113 |
| 0.95 | 114.0 | -0.3715 | 0.2036 |
| 0.95 | 126.0 | 0.103 | 0.2167 |
| 0.95 | 138.0 | 0.0434 | 0.2329 |
| 0.95 | 150.0 | -0.2127 | 0.2594 |
| 0.95 | 210.0 | -0.2314 | 0.2128 |
| 0.95 | 222.0 | 0.1203 | 0.1997 |
| 0.95 | 234.0 | -0.3159 | 0.2117 |
| 0.95 | 246.0 | 0.1885 | 0.1636 |
| 0.95 | 258.0 | -0.2495 | 0.1894 |
| 0.95 | 270.0 | 0.2325 | 0.2229 |
Experiment comment: