Measurement E8M16
| Experiment: | E89-038 CLAS experiment | |
|---|---|---|
| Year: | 1999 | |
| Spokespersons: | V. Burkert, R. Minehart | |
| Reaction: | ep → π+n | |
| Polarization: | none | |
| Quantity: | dσ/dΩ | |
| Q2: | 0.25 — 0.35 GeV2 | |
| W: | 1.4 — 1.42 GeV | |
| Ebeam: | 1.515 GeV | |
| Publication: |
under preparation //
|
|
| θπ, [deg] | φπ, [deg] | dσ/dΩ, [μb/sr] | uncertainty |
|---|---|---|---|
| 7.5 | 15.0 | 11.93 | 1.01 |
| 7.5 | 45.0 | 15.67 | 1.529 |
| 7.5 | 75.0 | 13.66 | 1.676 |
| 7.5 | 105.0 | 13.45 | 1.416 |
| 7.5 | 135.0 | 11.45 | 1.098 |
| 7.5 | 165.0 | 19.8 | 2.079 |
| 7.5 | 195.0 | 11.08 | 1.165 |
| 7.5 | 225.0 | 11.5 | 1.11 |
| 7.5 | 255.0 | 12.65 | 1.339 |
| 7.5 | 285.0 | 12.85 | 1.382 |
| 7.5 | 315.0 | 12.84 | 1.447 |
| 7.5 | 345.0 | 10.43 | 0.8538 |
| 22.5 | 45.0 | 9.31 | 2.116 |
| 22.5 | 75.0 | 10.53 | 1.766 |
| 22.5 | 105.0 | 10.75 | 1.487 |
| 22.5 | 135.0 | 7.95 | 1.065 |
| 22.5 | 225.0 | 9.685 | 1.181 |
| 22.5 | 255.0 | 9.349 | 1.401 |
| 22.5 | 285.0 | 10.55 | 1.807 |
| 22.5 | 315.0 | 9.586 | 1.846 |
| 37.5 | 45.0 | 9.334 | 0.5128 |
| 37.5 | 75.0 | 9.492 | 0.5236 |
| 37.5 | 165.0 | 3.501 | 0.3083 |
| 37.5 | 195.0 | 3.887 | 0.3474 |
| 37.5 | 285.0 | 9.77 | 0.5457 |
| 37.5 | 315.0 | 8.99 | 0.5088 |
| 52.5 | 45.0 | 7.221 | 0.8146 |
| 52.5 | 75.0 | 8.498 | 0.5801 |
| 52.5 | 105.0 | 7.847 | 0.8046 |
| 52.5 | 135.0 | 5.445 | 0.4275 |
| 52.5 | 165.0 | 2.956 | 0.1663 |
| 52.5 | 195.0 | 3.1 | 0.1649 |
| 52.5 | 225.0 | 5.5 | 0.3916 |
| 52.5 | 285.0 | 9.721 | 1.038 |
| 52.5 | 315.0 | 6.201 | 0.7493 |
| 67.5 | 15.0 | 4.377 | 2.345 |
| 67.5 | 45.0 | 5.372 | 0.7124 |
| 67.5 | 75.0 | 5.927 | 0.7233 |
| 67.5 | 105.0 | 6.562 | 0.2645 |
| 67.5 | 135.0 | 5.055 | 0.3521 |
| 67.5 | 165.0 | 2.413 | 0.1422 |
| 67.5 | 195.0 | 2.393 | 0.1474 |
| 67.5 | 225.0 | 4.724 | 0.3297 |
| 67.5 | 255.0 | 7.104 | 0.2739 |
| 67.5 | 285.0 | 7.103 | 0.7821 |
| 67.5 | 315.0 | 3.743 | 0.5043 |
| 82.5 | 15.0 | 2.207 | 0.7143 |
| 82.5 | 45.0 | 2.832 | 0.3611 |
| 82.5 | 75.0 | 4.839 | 0.3259 |
| 82.5 | 105.0 | 4.696 | 0.2106 |
| 82.5 | 135.0 | 3.825 | 0.3466 |
| 82.5 | 165.0 | 1.965 | 0.1512 |
| 82.5 | 195.0 | 2.047 | 0.1501 |
| 82.5 | 225.0 | 3.853 | 0.3122 |
| 82.5 | 255.0 | 4.914 | 0.2254 |
| 82.5 | 285.0 | 4.741 | 0.314 |
| 82.5 | 315.0 | 3.324 | 0.487 |
| 82.5 | 345.0 | 1.064 | 0.3485 |
| 97.5 | 15.0 | 0.852 | 0.1521 |
| 97.5 | 45.0 | 2.029 | 0.1497 |
| 97.5 | 75.0 | 3.545 | 0.321 |
| 97.5 | 105.0 | 3.281 | 0.1928 |
| 97.5 | 135.0 | 2.78 | 0.2765 |
| 97.5 | 165.0 | 1.321 | 0.1182 |
| 97.5 | 195.0 | 1.77 | 0.1663 |
| 97.5 | 225.0 | 2.34 | 0.2078 |
| 97.5 | 255.0 | 3.423 | 0.1898 |
| 97.5 | 285.0 | 3.261 | 0.2689 |
| 97.5 | 315.0 | 2.331 | 0.1561 |
| 97.5 | 345.0 | 1.105 | 0.2269 |
| 112.5 | 15.0 | 0.4335 | 0.091 |
| 112.5 | 45.0 | 1.216 | 0.1212 |
| 112.5 | 75.0 | 2.12 | 0.2119 |
| 112.5 | 105.0 | 1.969 | 0.1414 |
| 112.5 | 135.0 | 1.595 | 0.1496 |
| 112.5 | 165.0 | 1.336 | 0.1869 |
| 112.5 | 195.0 | 0.987 | 0.112 |
| 112.5 | 225.0 | 1.921 | 0.2292 |
| 112.5 | 255.0 | 2.083 | 0.14 |
| 112.5 | 285.0 | 2.038 | 0.2165 |
| 112.5 | 315.0 | 1.368 | 0.1414 |
| 112.5 | 345.0 | 0.6034 | 0.127 |
| 127.5 | 15.0 | 0.532 | 0.102 |
| 127.5 | 45.0 | 0.6862 | 0.09058 |
| 127.5 | 75.0 | 1.091 | 0.1173 |
| 127.5 | 105.0 | 1.382 | 0.2125 |
| 127.5 | 135.0 | 1.264 | 0.1587 |
| 127.5 | 195.0 | 1.461 | 0.5219 |
| 127.5 | 225.0 | 1.271 | 0.1612 |
| 127.5 | 255.0 | 1.43 | 0.1669 |
| 127.5 | 285.0 | 1.537 | 0.2499 |
| 127.5 | 315.0 | 0.8758 | 0.114 |
| 127.5 | 345.0 | 0.292 | 0.05737 |
| 142.5 | 15.0 | 0.3905 | 0.0945 |
| 142.5 | 45.0 | 0.7037 | 0.1707 |
| 142.5 | 75.0 | 0.7119 | 0.1212 |
| 142.5 | 105.0 | 1.217 | 0.4734 |
| 142.5 | 285.0 | 0.719 | 0.107 |
| 142.5 | 315.0 | 0.5424 | 0.1375 |
| 142.5 | 345.0 | 0.348 | 0.07639 |
| 157.5 | 15.0 | 0.2919 | 0.0766 |
| 157.5 | 345.0 | 0.4142 | 0.09779 |
Measurement comment:
Experiment comment: