Measurement E151M3570
| Experiment: | EG4 | |
|---|---|---|
| Year: | 2016 | |
| Spokesperson: | Xiaochao Zheng | |
| Reaction: | ep → π+n | |
| Polarization: | beam (longitudinal), target (longitudinal) | |
| Quantity: | ALU | |
| εL: | 0.1353 | |
| Q2: | 0.205 GeV2 | |
| W: | 1685.0 GeV | |
| Ebeam: | 2.999 GeV | |
| ε: | 0.8773 | |
| cos(θπ+) | φ(π+), [deg] | ALU | uncertainty |
|---|---|---|---|
| 0.25 | 66.0 | -0.0817 | 0.27 |
| 0.25 | 282.0 | 0.0094 | 0.2411 |
| 0.35 | 270.0 | 0.252 | 0.2375 |
| 0.35 | 282.0 | -0.2151 | 0.2583 |
| 0.45 | 114.0 | -0.0333 | 0.2475 |
| 0.45 | 270.0 | 0.0962 | 0.2243 |
| 0.45 | 282.0 | 0.4387 | 0.2096 |
| 0.55 | 90.0 | -0.4067 | 0.2423 |
| 0.55 | 102.0 | 0.1223 | 0.2166 |
| 0.55 | 114.0 | 0.1226 | 0.2085 |
| 0.55 | 126.0 | -0.4809 | 0.2244 |
| 0.55 | 210.0 | 0.1768 | 0.2352 |
| 0.55 | 234.0 | 0.0756 | 0.2442 |
| 0.55 | 258.0 | 0.0082 | 0.2711 |
| 0.55 | 270.0 | 0.2879 | 0.2242 |
| 0.65 | 102.0 | -0.0362 | 0.1971 |
| 0.65 | 114.0 | -0.1362 | 0.182 |
| 0.65 | 126.0 | 0.0559 | 0.1802 |
| 0.65 | 138.0 | 0.1812 | 0.2394 |
| 0.65 | 186.0 | -0.1437 | 0.23 |
| 0.65 | 198.0 | -0.0917 | 0.2048 |
| 0.65 | 210.0 | 0.3289 | 0.2054 |
| 0.65 | 222.0 | 0.0705 | 0.2187 |
| 0.65 | 234.0 | 0.222 | 0.2073 |
| 0.65 | 258.0 | 0.0206 | 0.2796 |
| 0.65 | 282.0 | 0.3075 | 0.2292 |
| 0.65 | 294.0 | 0.0333 | 0.2082 |
| 0.75 | 78.0 | -0.0261 | 0.2221 |
| 0.75 | 90.0 | 0.1878 | 0.2139 |
| 0.75 | 102.0 | 0.3606 | 0.2327 |
| 0.75 | 114.0 | 0.49 | 0.1802 |
| 0.75 | 126.0 | 0.0996 | 0.1983 |
| 0.75 | 186.0 | -0.0321 | 0.2521 |
| 0.75 | 198.0 | -0.3951 | 0.1693 |
| 0.75 | 210.0 | -0.0327 | 0.2043 |
| 0.75 | 222.0 | -0.2508 | 0.1958 |
| 0.75 | 234.0 | -0.3386 | 0.1948 |
| 0.75 | 246.0 | 0.2079 | 0.2416 |
| 0.75 | 270.0 | -0.0041 | 0.2736 |
| 0.75 | 282.0 | -0.0069 | 0.2076 |
| 0.75 | 294.0 | -0.0514 | 0.1898 |
| 0.75 | 306.0 | 0.0541 | 0.2222 |
| 0.85 | 78.0 | 0.0477 | 0.1632 |
| 0.85 | 90.0 | -0.0503 | 0.1708 |
| 0.85 | 102.0 | 0.1415 | 0.1873 |
| 0.85 | 114.0 | 0.0468 | 0.2516 |
| 0.85 | 174.0 | 0.0344 | 0.2597 |
| 0.85 | 186.0 | -0.1281 | 0.2291 |
| 0.85 | 198.0 | -0.1984 | 0.1761 |
| 0.85 | 210.0 | 0.2319 | 0.1754 |
| 0.85 | 222.0 | -0.0628 | 0.1457 |
| 0.85 | 234.0 | 0.0505 | 0.1469 |
| 0.85 | 246.0 | 0.0597 | 0.1619 |
| 0.85 | 258.0 | -0.0615 | 0.2218 |
| 0.95 | 78.0 | -0.2 | 0.2638 |
| 0.95 | 90.0 | -0.2466 | 0.2263 |
| 0.95 | 162.0 | -0.169 | 0.2588 |
| 0.95 | 174.0 | -0.4065 | 0.215 |
| 0.95 | 186.0 | -0.3009 | 0.2074 |
| 0.95 | 198.0 | -0.1403 | 0.2089 |
| 0.95 | 210.0 | 0.137 | 0.1755 |
| 0.95 | 222.0 | 0.0015 | 0.1737 |
| 0.95 | 234.0 | 0.0251 | 0.1815 |
| 0.95 | 246.0 | -0.1971 | 0.1841 |
| 0.95 | 258.0 | 0.1137 | 0.1838 |
| 0.95 | 270.0 | 0.0418 | 0.2212 |
Experiment comment: