Measurement E151M3235
| Experiment: | EG4 | |
|---|---|---|
| Year: | 2016 | |
| Spokesperson: | Xiaochao Zheng | |
| Reaction: | ep → π+n | |
| Polarization: | beam (longitudinal), target (longitudinal) | |
| Quantity: | ALU | |
| εL: | 0.192 | |
| Q2: | 0.0707 GeV2 | |
| W: | 1385.0 GeV | |
| Ebeam: | 2.2596 GeV | |
| ε: | 0.947 | |
| cos(θπ+) | φ(π+), [deg] | ALU | uncertainty |
|---|---|---|---|
| 0.15 | 66.0 | -0.3073 | 0.1719 |
| 0.25 | 54.0 | 0.3211 | 0.2303 |
| 0.25 | 66.0 | -0.0468 | 0.1874 |
| 0.25 | 78.0 | -0.1398 | 0.2447 |
| 0.25 | 294.0 | -0.0555 | 0.1971 |
| 0.25 | 306.0 | 0.0911 | 0.2503 |
| 0.35 | 66.0 | -0.0111 | 0.1632 |
| 0.35 | 78.0 | -0.1147 | 0.2006 |
| 0.35 | 282.0 | 0.2436 | 0.1592 |
| 0.35 | 294.0 | 0.1145 | 0.1712 |
| 0.35 | 306.0 | 0.4315 | 0.2214 |
| 0.45 | 66.0 | -0.3267 | 0.1716 |
| 0.45 | 78.0 | 0.1993 | 0.1673 |
| 0.45 | 90.0 | -0.7449 | 0.1781 |
| 0.45 | 270.0 | 0.0366 | 0.2205 |
| 0.45 | 282.0 | -0.0534 | 0.1941 |
| 0.45 | 294.0 | 0.067 | 0.1636 |
| 0.55 | 66.0 | -0.0219 | 0.2228 |
| 0.55 | 78.0 | -0.0043 | 0.1875 |
| 0.55 | 90.0 | 0.1788 | 0.1921 |
| 0.55 | 102.0 | 0.1732 | 0.184 |
| 0.55 | 114.0 | -0.2744 | 0.2304 |
| 0.55 | 258.0 | -0.1209 | 0.2303 |
| 0.55 | 270.0 | 0.4945 | 0.2012 |
| 0.55 | 282.0 | -0.374 | 0.1613 |
| 0.55 | 294.0 | 0.0983 | 0.2152 |
| 0.65 | 78.0 | -0.2969 | 0.2093 |
| 0.65 | 90.0 | -0.1061 | 0.1836 |
| 0.65 | 102.0 | 0.0881 | 0.1741 |
| 0.65 | 114.0 | -0.3392 | 0.1634 |
| 0.65 | 126.0 | 0.2576 | 0.1617 |
| 0.65 | 138.0 | 0.2989 | 0.2297 |
| 0.65 | 222.0 | -0.3402 | 0.2153 |
| 0.65 | 234.0 | 0.248 | 0.2111 |
| 0.65 | 246.0 | 0.2193 | 0.1585 |
| 0.65 | 258.0 | -0.0924 | 0.2105 |
| 0.65 | 270.0 | -0.0568 | 0.1947 |
| 0.65 | 282.0 | 0.1448 | 0.2191 |
| 0.65 | 294.0 | 0.2991 | 0.2401 |
| 0.75 | 90.0 | -0.4769 | 0.2407 |
| 0.75 | 102.0 | -0.2256 | 0.2063 |
| 0.75 | 114.0 | -0.1194 | 0.159 |
| 0.75 | 126.0 | -0.1363 | 0.1619 |
| 0.75 | 138.0 | 0.0266 | 0.1757 |
| 0.75 | 150.0 | 0.1265 | 0.2436 |
| 0.75 | 198.0 | 0.0427 | 0.2646 |
| 0.75 | 210.0 | -0.1444 | 0.2215 |
| 0.75 | 222.0 | 0.0253 | 0.1716 |
| 0.75 | 234.0 | 0.039 | 0.1775 |
| 0.75 | 246.0 | -0.1805 | 0.1768 |
| 0.75 | 258.0 | 0.1187 | 0.1639 |
| 0.75 | 270.0 | 0.2243 | 0.1978 |
| 0.85 | 90.0 | 0.6151 | 0.2334 |
| 0.85 | 102.0 | 0.526 | 0.2003 |
| 0.85 | 114.0 | 0.0799 | 0.1747 |
| 0.85 | 126.0 | 0.1445 | 0.1616 |
| 0.85 | 138.0 | 0.0864 | 0.1813 |
| 0.85 | 150.0 | -0.0942 | 0.2151 |
| 0.85 | 210.0 | -0.2894 | 0.2042 |
| 0.85 | 222.0 | 0.0671 | 0.2148 |
| 0.85 | 234.0 | -0.265 | 0.1582 |
| 0.85 | 246.0 | 0.0634 | 0.1451 |
| 0.85 | 258.0 | 0.1624 | 0.1614 |
| 0.85 | 270.0 | -0.0539 | 0.172 |
| 0.95 | 102.0 | 0.4678 | 0.2355 |
| 0.95 | 222.0 | -0.023 | 0.2644 |
| 0.95 | 234.0 | 0.1541 | 0.2089 |
| 0.95 | 246.0 | 0.0203 | 0.1994 |
| 0.95 | 258.0 | -0.0612 | 0.1937 |
| 0.15 | 306.0 | 0.1066 | 0.2575 |
| 0.25 | 66.0 | 0.3771 | 0.1902 |
| 0.25 | 78.0 | -0.1094 | 0.2553 |
| 0.25 | 294.0 | -0.384 | 0.1796 |
| 0.25 | 306.0 | 0.033 | 0.2601 |
| 0.35 | 54.0 | 0.0031 | 0.2672 |
| 0.35 | 66.0 | 0.0849 | 0.1957 |
| 0.35 | 78.0 | -0.0827 | 0.1669 |
| 0.35 | 282.0 | -0.2266 | 0.1649 |
| 0.35 | 294.0 | 0.1026 | 0.1626 |
| 0.35 | 306.0 | 0.1021 | 0.2173 |
| 0.45 | 66.0 | -0.2443 | 0.1784 |
| 0.45 | 78.0 | -0.4164 | 0.1416 |
| 0.45 | 90.0 | -0.245 | 0.1969 |
| 0.45 | 270.0 | 0.2535 | 0.2354 |
| 0.45 | 282.0 | -0.1034 | 0.1707 |
| 0.45 | 294.0 | 0.0367 | 0.1624 |
| 0.55 | 66.0 | 0.2314 | 0.1929 |
| 0.55 | 78.0 | 0.1854 | 0.1606 |
| 0.55 | 90.0 | -0.3485 | 0.2045 |
| 0.55 | 102.0 | 0.1872 | 0.209 |
| 0.55 | 114.0 | -0.0204 | 0.2235 |
| 0.55 | 258.0 | 0.1995 | 0.2173 |
| 0.55 | 270.0 | -0.1039 | 0.1741 |
| 0.55 | 282.0 | -0.0586 | 0.1637 |
| 0.55 | 294.0 | 0.2167 | 0.1966 |
| 0.65 | 66.0 | -0.097 | 0.2075 |
| 0.65 | 78.0 | -0.2528 | 0.2092 |
| 0.65 | 90.0 | 0.4807 | 0.1641 |
| 0.65 | 102.0 | 0.1096 | 0.1913 |
| 0.65 | 114.0 | 0.0944 | 0.1562 |
| 0.65 | 126.0 | -0.1145 | 0.1745 |
| 0.65 | 138.0 | -0.2884 | 0.2264 |
| 0.65 | 222.0 | 0.0645 | 0.2443 |
| 0.65 | 234.0 | -0.2139 | 0.1861 |
| 0.65 | 246.0 | 0.1905 | 0.1898 |
| 0.65 | 258.0 | 0.0546 | 0.1791 |
| 0.65 | 270.0 | 0.2134 | 0.1941 |
| 0.65 | 282.0 | 0.0393 | 0.2086 |
| 0.65 | 294.0 | -0.5065 | 0.1838 |
| 0.75 | 90.0 | 0.2107 | 0.2201 |
| 0.75 | 102.0 | 0.2211 | 0.1753 |
| 0.75 | 114.0 | 0.0914 | 0.1411 |
| 0.75 | 126.0 | 0.047 | 0.154 |
| 0.75 | 138.0 | -0.0395 | 0.1778 |
| 0.75 | 150.0 | 0.1646 | 0.2171 |
| 0.75 | 162.0 | -0.2613 | 0.2438 |
| 0.75 | 210.0 | 0.048 | 0.1819 |
| 0.75 | 222.0 | 0.1668 | 0.1827 |
| 0.75 | 234.0 | 0.0682 | 0.1633 |
| 0.75 | 246.0 | -0.1369 | 0.1468 |
| 0.75 | 258.0 | 0.0043 | 0.1495 |
| 0.75 | 270.0 | 0.4913 | 0.2152 |
| 0.75 | 282.0 | -0.3703 | 0.2259 |
| 0.85 | 102.0 | 0.0842 | 0.2146 |
| 0.85 | 114.0 | 0.0351 | 0.1607 |
| 0.85 | 126.0 | 0.2524 | 0.158 |
| 0.85 | 138.0 | 0.0867 | 0.1705 |
| 0.85 | 150.0 | -0.0698 | 0.2324 |
| 0.85 | 162.0 | -0.2398 | 0.2463 |
| 0.85 | 198.0 | -0.2797 | 0.2377 |
| 0.85 | 210.0 | -0.217 | 0.1957 |
| 0.85 | 222.0 | 0.1067 | 0.186 |
| 0.85 | 234.0 | -0.1422 | 0.158 |
| 0.85 | 246.0 | 0.2091 | 0.1607 |
| 0.85 | 258.0 | -0.0839 | 0.1548 |
| 0.85 | 270.0 | 0.105 | 0.1619 |
| 0.85 | 282.0 | -0.1262 | 0.249 |
| 0.95 | 234.0 | -0.2092 | 0.1891 |
| 0.95 | 246.0 | -0.097 | 0.1729 |
| 0.95 | 258.0 | -0.3284 | 0.1679 |
| 0.95 | 270.0 | 0.1529 | 0.2407 |
Experiment comment: