Measurement E8M23
| 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: | 1.54 — 1.56 GeV | |
| Ebeam: | 1.515 GeV | |
| Publication: |
under preparation //
|
|
| θπ, [deg] | φπ, [deg] | dσ/dΩ, [μb/sr] | uncertainty |
|---|---|---|---|
| 7.5 | 15.0 | 16.8 | 5.237 |
| 7.5 | 45.0 | 18.38 | 4.043 |
| 7.5 | 75.0 | 17.28 | 3.267 |
| 7.5 | 105.0 | 11.09 | 1.522 |
| 7.5 | 135.0 | 10.24 | 0.8581 |
| 7.5 | 165.0 | 8.973 | 0.7361 |
| 7.5 | 195.0 | 9.482 | 0.7653 |
| 7.5 | 225.0 | 14.44 | 1.42 |
| 7.5 | 255.0 | 15.09 | 1.909 |
| 7.5 | 285.0 | 17.46 | 4.382 |
| 7.5 | 315.0 | 18.39 | 5.229 |
| 7.5 | 345.0 | 18.84 | 8.088 |
| 22.5 | 75.0 | 9.054 | 1.988 |
| 22.5 | 105.0 | 10.63 | 2.118 |
| 22.5 | 135.0 | 6.276 | 0.5664 |
| 22.5 | 165.0 | 5.86 | 0.3967 |
| 22.5 | 195.0 | 6.168 | 0.4029 |
| 22.5 | 225.0 | 6.813 | 0.7466 |
| 22.5 | 255.0 | 10.3 | 1.569 |
| 22.5 | 285.0 | 9.0 | 1.599 |
| 37.5 | 75.0 | 6.425 | 0.3066 |
| 37.5 | 105.0 | 5.994 | 0.4342 |
| 37.5 | 135.0 | 5.563 | 0.8538 |
| 37.5 | 165.0 | 4.126 | 0.3648 |
| 37.5 | 195.0 | 3.259 | 0.3403 |
| 37.5 | 225.0 | 4.666 | 0.5518 |
| 37.5 | 255.0 | 6.086 | 0.3796 |
| 37.5 | 285.0 | 5.863 | 0.2764 |
| 52.5 | 45.0 | 2.94 | 0.3263 |
| 52.5 | 75.0 | 3.999 | 0.2957 |
| 52.5 | 105.0 | 3.947 | 0.3812 |
| 52.5 | 255.0 | 3.939 | 0.8409 |
| 52.5 | 285.0 | 3.988 | 0.244 |
| 52.5 | 315.0 | 2.586 | 0.3609 |
| 67.5 | 15.0 | 0.9769 | 0.1958 |
| 67.5 | 45.0 | 1.701 | 0.1283 |
| 67.5 | 135.0 | 1.955 | 0.1647 |
| 67.5 | 165.0 | 1.408 | 0.1009 |
| 67.5 | 195.0 | 1.405 | 0.09515 |
| 67.5 | 225.0 | 1.992 | 0.1561 |
| 67.5 | 255.0 | 3.324 | 0.8857 |
| 67.5 | 285.0 | 2.978 | 0.5427 |
| 67.5 | 315.0 | 1.812 | 0.1481 |
| 67.5 | 345.0 | 0.8059 | 0.2714 |
| 82.5 | 45.0 | 1.206 | 0.2712 |
| 82.5 | 75.0 | 1.796 | 0.2945 |
| 82.5 | 105.0 | 1.941 | 0.1104 |
| 82.5 | 135.0 | 1.626 | 0.1387 |
| 82.5 | 165.0 | 0.9077 | 0.07177 |
| 82.5 | 195.0 | 1.081 | 0.08062 |
| 82.5 | 225.0 | 1.466 | 0.1254 |
| 82.5 | 255.0 | 2.3 | 0.1302 |
| 82.5 | 285.0 | 1.892 | 0.2219 |
| 82.5 | 315.0 | 1.722 | 0.3502 |
| 97.5 | 15.0 | 1.028 | 0.1566 |
| 97.5 | 45.0 | 1.599 | 0.1178 |
| 97.5 | 75.0 | 2.226 | 0.1814 |
| 97.5 | 105.0 | 2.348 | 0.1359 |
| 97.5 | 135.0 | 1.627 | 0.1422 |
| 97.5 | 165.0 | 0.9323 | 0.09131 |
| 97.5 | 195.0 | 1.161 | 0.1219 |
| 97.5 | 225.0 | 1.602 | 0.1386 |
| 97.5 | 255.0 | 2.179 | 0.1312 |
| 97.5 | 285.0 | 2.041 | 0.1761 |
| 97.5 | 315.0 | 1.582 | 0.119 |
| 97.5 | 345.0 | 1.219 | 0.1704 |
| 112.5 | 15.0 | 1.228 | 0.1492 |
| 112.5 | 45.0 | 1.897 | 0.168 |
| 112.5 | 75.0 | 2.714 | 0.2179 |
| 112.5 | 105.0 | 2.886 | 0.1797 |
| 112.5 | 135.0 | 1.902 | 0.1484 |
| 112.5 | 165.0 | 1.169 | 0.1152 |
| 112.5 | 195.0 | 1.271 | 0.1092 |
| 112.5 | 225.0 | 1.769 | 0.1417 |
| 112.5 | 255.0 | 2.47 | 0.1521 |
| 112.5 | 285.0 | 3.068 | 0.2354 |
| 112.5 | 315.0 | 1.839 | 0.1732 |
| 112.5 | 345.0 | 1.186 | 0.1227 |
| 127.5 | 15.0 | 1.549 | 0.1602 |
| 127.5 | 45.0 | 1.996 | 0.1812 |
| 127.5 | 75.0 | 2.4 | 0.1893 |
| 127.5 | 105.0 | 2.378 | 0.1867 |
| 127.5 | 135.0 | 2.045 | 0.1902 |
| 127.5 | 165.0 | 1.223 | 0.1539 |
| 127.5 | 195.0 | 1.187 | 0.1478 |
| 127.5 | 225.0 | 2.209 | 0.3611 |
| 127.5 | 255.0 | 2.308 | 0.1788 |
| 127.5 | 285.0 | 2.574 | 0.2241 |
| 127.5 | 315.0 | 1.74 | 0.1655 |
| 127.5 | 345.0 | 1.284 | 0.1511 |
| 142.5 | 15.0 | 1.194 | 0.148 |
| 142.5 | 45.0 | 1.729 | 0.2678 |
| 142.5 | 75.0 | 1.85 | 0.1833 |
| 142.5 | 105.0 | 2.038 | 0.4269 |
| 142.5 | 135.0 | 1.607 | 0.2676 |
| 142.5 | 225.0 | 1.397 | 0.3025 |
| 142.5 | 255.0 | 2.287 | 0.4545 |
| 142.5 | 285.0 | 2.425 | 0.2774 |
| 142.5 | 315.0 | 1.714 | 0.2423 |
| 142.5 | 345.0 | 1.654 | 0.2023 |
| 157.5 | 15.0 | 1.717 | 0.3813 |
| 157.5 | 345.0 | 2.148 | 1.021 |
Measurement comment:
Experiment comment: