Measurement E8M18
| 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: | 1.44 — 1.46 GeV | |
| Ebeam: | 1.515 GeV | |
| Publication: |
under preparation //
|
|
| θπ, [deg] | φπ, [deg] | dσ/dΩ, [μb/sr] | uncertainty |
|---|---|---|---|
| 7.5 | 15.0 | 12.16 | 1.005 |
| 7.5 | 45.0 | 11.14 | 1.051 |
| 7.5 | 75.0 | 11.98 | 1.328 |
| 7.5 | 105.0 | 9.912 | 1.135 |
| 7.5 | 135.0 | 9.181 | 0.9196 |
| 7.5 | 165.0 | 8.276 | 0.7936 |
| 7.5 | 195.0 | 6.189 | 0.6013 |
| 7.5 | 225.0 | 6.731 | 0.7207 |
| 7.5 | 255.0 | 9.519 | 1.149 |
| 7.5 | 285.0 | 11.87 | 1.395 |
| 7.5 | 315.0 | 13.49 | 1.414 |
| 7.5 | 345.0 | 9.846 | 0.8344 |
| 22.5 | 75.0 | 7.974 | 1.159 |
| 22.5 | 105.0 | 8.574 | 1.451 |
| 22.5 | 135.0 | 7.396 | 0.7257 |
| 22.5 | 165.0 | 5.356 | 0.4661 |
| 22.5 | 195.0 | 4.998 | 0.4951 |
| 22.5 | 225.0 | 6.054 | 0.5417 |
| 22.5 | 255.0 | 8.908 | 1.297 |
| 22.5 | 285.0 | 8.493 | 2.248 |
| 37.5 | 45.0 | 8.248 | 0.539 |
| 37.5 | 75.0 | 9.58 | 0.463 |
| 37.5 | 105.0 | 10.15 | 1.055 |
| 37.5 | 255.0 | 8.568 | 0.9579 |
| 37.5 | 285.0 | 9.55 | 0.4321 |
| 37.5 | 315.0 | 9.192 | 0.7539 |
| 52.5 | 45.0 | 7.452 | 1.235 |
| 52.5 | 75.0 | 9.248 | 0.6296 |
| 52.5 | 135.0 | 5.545 | 0.4677 |
| 52.5 | 165.0 | 3.051 | 0.1664 |
| 52.5 | 195.0 | 2.725 | 0.1504 |
| 52.5 | 225.0 | 4.869 | 0.3835 |
| 52.5 | 285.0 | 9.831 | 0.6734 |
| 52.5 | 315.0 | 7.271 | 1.594 |
| 67.5 | 15.0 | 3.056 | 0.3846 |
| 67.5 | 45.0 | 5.024 | 0.4087 |
| 67.5 | 75.0 | 7.004 | 0.8612 |
| 67.5 | 105.0 | 7.342 | 0.2949 |
| 67.5 | 135.0 | 5.459 | 0.3568 |
| 67.5 | 165.0 | 2.741 | 0.1551 |
| 67.5 | 195.0 | 2.571 | 0.1447 |
| 67.5 | 225.0 | 4.731 | 0.3225 |
| 67.5 | 255.0 | 7.451 | 0.2713 |
| 67.5 | 315.0 | 4.79 | 0.3814 |
| 67.5 | 345.0 | 2.286 | 0.3007 |
| 82.5 | 15.0 | 2.443 | 0.8797 |
| 82.5 | 45.0 | 3.116 | 0.3364 |
| 82.5 | 75.0 | 5.356 | 0.3275 |
| 82.5 | 105.0 | 5.603 | 0.2332 |
| 82.5 | 135.0 | 4.023 | 0.2787 |
| 82.5 | 165.0 | 2.09 | 0.1465 |
| 82.5 | 195.0 | 2.101 | 0.1452 |
| 82.5 | 225.0 | 3.97 | 0.2822 |
| 82.5 | 255.0 | 5.08 | 0.2174 |
| 82.5 | 285.0 | 5.564 | 0.3427 |
| 82.5 | 315.0 | 3.767 | 1.135 |
| 82.5 | 345.0 | 1.812 | 0.6033 |
| 97.5 | 15.0 | 1.184 | 0.1584 |
| 97.5 | 45.0 | 2.386 | 0.1538 |
| 97.5 | 75.0 | 4.027 | 0.2868 |
| 97.5 | 105.0 | 4.029 | 0.2073 |
| 97.5 | 135.0 | 3.129 | 0.2775 |
| 97.5 | 165.0 | 1.37 | 0.1239 |
| 97.5 | 195.0 | 1.886 | 0.1673 |
| 97.5 | 225.0 | 3.318 | 0.2846 |
| 97.5 | 255.0 | 4.346 | 0.2222 |
| 97.5 | 285.0 | 4.675 | 0.3251 |
| 97.5 | 315.0 | 2.406 | 0.1591 |
| 97.5 | 345.0 | 0.9067 | 0.1495 |
| 112.5 | 15.0 | 0.7247 | 0.1202 |
| 112.5 | 45.0 | 1.587 | 0.1382 |
| 112.5 | 75.0 | 2.831 | 0.2635 |
| 112.5 | 105.0 | 2.77 | 0.1804 |
| 112.5 | 135.0 | 2.559 | 0.3639 |
| 112.5 | 165.0 | 1.517 | 0.1999 |
| 112.5 | 195.0 | 1.266 | 0.1237 |
| 112.5 | 225.0 | 1.939 | 0.1589 |
| 112.5 | 255.0 | 2.836 | 0.173 |
| 112.5 | 285.0 | 2.805 | 0.2379 |
| 112.5 | 315.0 | 1.751 | 0.158 |
| 112.5 | 345.0 | 0.6684 | 0.116 |
| 127.5 | 15.0 | 0.4464 | 0.09101 |
| 127.5 | 45.0 | 1.205 | 0.1529 |
| 127.5 | 75.0 | 1.484 | 0.1509 |
| 127.5 | 105.0 | 1.719 | 0.1664 |
| 127.5 | 135.0 | 2.018 | 0.4967 |
| 127.5 | 165.0 | 0.9399 | 0.1843 |
| 127.5 | 195.0 | 1.316 | 0.2618 |
| 127.5 | 225.0 | 1.621 | 0.1762 |
| 127.5 | 255.0 | 1.744 | 0.1579 |
| 127.5 | 285.0 | 1.732 | 0.1605 |
| 127.5 | 315.0 | 1.253 | 0.1421 |
| 127.5 | 345.0 | 0.4678 | 0.08197 |
| 142.5 | 15.0 | 0.4584 | 0.08073 |
| 142.5 | 45.0 | 0.7918 | 0.1406 |
| 142.5 | 75.0 | 1.122 | 0.1591 |
| 142.5 | 105.0 | 2.318 | 1.283 |
| 142.5 | 285.0 | 1.184 | 0.1472 |
| 142.5 | 315.0 | 0.6817 | 0.1556 |
| 142.5 | 345.0 | 0.5237 | 0.1013 |
| 157.5 | 15.0 | 0.6962 | 0.284 |
| 157.5 | 345.0 | 0.2401 | 0.07894 |
Measurement comment:
Experiment comment: