Measurement E8M58
| Experiment: | E89-038 CLAS experiment | |
|---|---|---|
| Year: | 1999 | |
| Spokespersons: | V. Burkert, R. Minehart | |
| Reaction: | ep → π+n | |
| Polarization: | none | |
| Quantity: | dσ/dΩ | |
| Q2: | 0.45 — 0.55 GeV2 | |
| W: | 1.3 — 1.32 GeV | |
| Ebeam: | 1.515 GeV | |
| Publication: |
under preparation //
|
|
| θπ, [deg] | φπ, [deg] | dσ/dΩ, [μb/sr] | uncertainty |
|---|---|---|---|
| 7.5 | 15.0 | 16.44 | 4.323 |
| 7.5 | 45.0 | 11.37 | 1.467 |
| 7.5 | 75.0 | 12.79 | 1.859 |
| 7.5 | 105.0 | 22.56 | 5.974 |
| 7.5 | 135.0 | 13.99 | 3.075 |
| 7.5 | 165.0 | 11.85 | 3.263 |
| 7.5 | 195.0 | 17.69 | 9.882 |
| 7.5 | 225.0 | 16.54 | 2.888 |
| 7.5 | 255.0 | 15.36 | 2.754 |
| 7.5 | 285.0 | 19.22 | 3.776 |
| 7.5 | 315.0 | 14.12 | 1.801 |
| 7.5 | 345.0 | 11.89 | 1.424 |
| 22.5 | 15.0 | 12.48 | 1.211 |
| 22.5 | 45.0 | 11.48 | 1.317 |
| 22.5 | 75.0 | 12.99 | 2.058 |
| 22.5 | 285.0 | 14.84 | 2.0 |
| 22.5 | 315.0 | 16.02 | 3.023 |
| 22.5 | 345.0 | 12.91 | 1.233 |
| 37.5 | 45.0 | 8.492 | 1.371 |
| 37.5 | 75.0 | 11.04 | 1.26 |
| 37.5 | 135.0 | 9.095 | 0.6769 |
| 37.5 | 165.0 | 7.94 | 0.443 |
| 37.5 | 195.0 | 7.81 | 0.4391 |
| 37.5 | 225.0 | 9.459 | 0.8599 |
| 37.5 | 285.0 | 8.989 | 1.125 |
| 37.5 | 315.0 | 7.769 | 1.018 |
| 52.5 | 45.0 | 6.876 | 0.4578 |
| 52.5 | 75.0 | 13.25 | 3.721 |
| 52.5 | 105.0 | 8.007 | 0.5416 |
| 52.5 | 135.0 | 7.69 | 0.4921 |
| 52.5 | 165.0 | 6.18 | 0.3464 |
| 52.5 | 195.0 | 6.64 | 0.3619 |
| 52.5 | 225.0 | 7.831 | 0.5138 |
| 52.5 | 255.0 | 7.42 | 0.5281 |
| 52.5 | 285.0 | 10.65 | 3.77 |
| 52.5 | 315.0 | 7.585 | 0.5382 |
| 67.5 | 45.0 | 4.325 | 0.7095 |
| 67.5 | 75.0 | 6.53 | 1.279 |
| 67.5 | 105.0 | 7.057 | 0.3915 |
| 67.5 | 135.0 | 6.489 | 0.4642 |
| 67.5 | 165.0 | 5.327 | 0.2888 |
| 67.5 | 195.0 | 5.748 | 0.3205 |
| 67.5 | 225.0 | 6.514 | 0.4495 |
| 67.5 | 255.0 | 7.037 | 0.3823 |
| 67.5 | 285.0 | 7.106 | 1.151 |
| 67.5 | 315.0 | 5.066 | 1.053 |
| 82.5 | 15.0 | 1.771 | 0.5014 |
| 82.5 | 45.0 | 3.365 | 0.8309 |
| 82.5 | 75.0 | 4.431 | 0.289 |
| 82.5 | 105.0 | 5.849 | 0.3178 |
| 82.5 | 135.0 | 5.691 | 0.4304 |
| 82.5 | 165.0 | 4.147 | 0.2994 |
| 82.5 | 195.0 | 4.025 | 0.2811 |
| 82.5 | 225.0 | 5.486 | 0.4352 |
| 82.5 | 255.0 | 5.133 | 0.2704 |
| 82.5 | 285.0 | 4.658 | 0.286 |
| 82.5 | 315.0 | 2.254 | 0.3613 |
| 82.5 | 345.0 | 2.047 | 0.3666 |
| 97.5 | 15.0 | 1.837 | 1.074 |
| 97.5 | 45.0 | 2.784 | 0.2441 |
| 97.5 | 75.0 | 3.821 | 0.3084 |
| 97.5 | 105.0 | 4.555 | 0.28 |
| 97.5 | 135.0 | 4.477 | 0.3618 |
| 97.5 | 165.0 | 3.335 | 0.2345 |
| 97.5 | 195.0 | 3.321 | 0.23 |
| 97.5 | 225.0 | 3.912 | 0.3447 |
| 97.5 | 255.0 | 3.762 | 0.2407 |
| 97.5 | 285.0 | 4.142 | 0.3238 |
| 97.5 | 315.0 | 3.09 | 0.2768 |
| 112.5 | 15.0 | 1.16 | 0.3094 |
| 112.5 | 45.0 | 1.642 | 0.1521 |
| 112.5 | 75.0 | 2.361 | 0.2446 |
| 112.5 | 105.0 | 2.68 | 0.2072 |
| 112.5 | 135.0 | 2.924 | 0.2724 |
| 112.5 | 165.0 | 2.739 | 0.2713 |
| 112.5 | 195.0 | 2.407 | 0.2446 |
| 112.5 | 225.0 | 2.822 | 0.2515 |
| 112.5 | 255.0 | 3.145 | 0.2301 |
| 112.5 | 285.0 | 2.804 | 0.2977 |
| 112.5 | 315.0 | 2.309 | 0.2136 |
| 112.5 | 345.0 | 1.556 | 0.3818 |
| 127.5 | 15.0 | 0.9368 | 0.1656 |
| 127.5 | 45.0 | 1.517 | 0.1815 |
| 127.5 | 75.0 | 1.75 | 0.2018 |
| 127.5 | 105.0 | 2.132 | 0.2405 |
| 127.5 | 135.0 | 2.03 | 0.2451 |
| 127.5 | 165.0 | 2.295 | 0.5866 |
| 127.5 | 195.0 | 1.779 | 0.269 |
| 127.5 | 225.0 | 2.024 | 0.3307 |
| 127.5 | 255.0 | 1.978 | 0.2115 |
| 127.5 | 285.0 | 2.217 | 0.259 |
| 127.5 | 315.0 | 2.006 | 0.3354 |
| 127.5 | 345.0 | 0.9653 | 0.172 |
| 142.5 | 15.0 | 0.6536 | 0.1231 |
| 142.5 | 45.0 | 1.169 | 0.2293 |
| 142.5 | 75.0 | 1.505 | 0.2072 |
| 142.5 | 105.0 | 0.9316 | 0.2101 |
| 142.5 | 135.0 | 1.144 | 0.2804 |
| 142.5 | 255.0 | 0.9662 | 0.2431 |
| 142.5 | 285.0 | 1.197 | 0.1931 |
| 142.5 | 315.0 | 1.051 | 0.1827 |
| 142.5 | 345.0 | 0.7625 | 0.1403 |
| 157.5 | 15.0 | 0.8436 | 0.3637 |
| 157.5 | 75.0 | 0.6529 | 0.3031 |
| 157.5 | 345.0 | 0.4348 | 0.1596 |
Measurement comment:
Experiment comment: