Measurement E141M20
| Experiment: | Measurement of ep→e′nπ+ at 1.6<W<2.0 GeV and extraction of nucleon resonance electrocoupling at CLAS | |
|---|---|---|
| Year: | 2014 | |
| Spokespersons: | K. Park, V.D. Burkert, I.G. Aznauryan | |
| Reaction: | ep → π+n | |
| Polarization: | beam | |
| Quantity: | dσ/dΩ | |
| Q2: | 1.8 GeV2 | |
| W: | 1.83 GeV | |
| Ebeam: | 5.499 GeV | |
| Publication: | ||
| cos(θ) | φ, [degree] | dσ/dΩ, [μb/rad] | uncertainty |
|---|---|---|---|
| -0.9 | 7.5 | 0.1309 | 0.022 |
| -0.9 | 22.5 | 0.1182 | 0.0235 |
| -0.9 | 37.5 | 0.1289 | 0.0244 |
| -0.9 | 52.5 | 0.1689 | 0.0332 |
| -0.9 | 67.5 | 0.1791 | 0.0298 |
| -0.9 | 82.5 | 0.1501 | 0.0324 |
| -0.9 | 97.5 | 0.0989 | 0.0225 |
| -0.9 | 112.5 | 0.11 | 0.0253 |
| -0.9 | 127.5 | 0.1693 | 0.0327 |
| -0.9 | 142.5 | 0.142 | 0.0429 |
| -0.9 | 157.5 | 0.0974 | 0.0315 |
| -0.9 | 172.5 | 0.0837 | 0.025 |
| -0.9 | 187.5 | 0.1544 | 0.0387 |
| -0.9 | 202.5 | 0.1707 | 0.0492 |
| -0.9 | 217.5 | 0.0929 | 0.0256 |
| -0.9 | 232.5 | 0.1296 | 0.0262 |
| -0.9 | 247.5 | 0.0993 | 0.0217 |
| -0.9 | 262.5 | 0.1583 | 0.0357 |
| -0.9 | 277.5 | 0.1587 | 0.0332 |
| -0.9 | 292.5 | 0.1399 | 0.026 |
| -0.9 | 307.5 | 0.1674 | 0.0262 |
| -0.9 | 322.5 | 0.1341 | 0.0264 |
| -0.9 | 337.5 | 0.087 | 0.0191 |
| -0.9 | 352.5 | 0.1288 | 0.0198 |
| -0.7 | 7.5 | 0.1562 | 0.0236 |
| -0.7 | 22.5 | 0.2067 | 0.0356 |
| -0.7 | 37.5 | 0.2023 | 0.0287 |
| -0.7 | 52.5 | 0.2108 | 0.0251 |
| -0.7 | 67.5 | 0.2299 | 0.031 |
| -0.7 | 82.5 | 0.1788 | 0.0391 |
| -0.7 | 97.5 | 0.1078 | 0.0164 |
| -0.7 | 112.5 | 0.1137 | 0.0162 |
| -0.7 | 127.5 | 0.1056 | 0.0152 |
| -0.7 | 142.5 | 0.1067 | 0.0177 |
| -0.7 | 157.5 | 0.0566 | 0.01 |
| -0.7 | 172.5 | 0.077 | 0.0121 |
| -0.7 | 187.5 | 0.0734 | 0.0121 |
| -0.7 | 202.5 | 0.0476 | 0.01 |
| -0.7 | 217.5 | 0.0674 | 0.0123 |
| -0.7 | 232.5 | 0.1088 | 0.0151 |
| -0.7 | 247.5 | 0.1085 | 0.0143 |
| -0.7 | 262.5 | 0.1487 | 0.0196 |
| -0.7 | 277.5 | 0.217 | 0.0327 |
| -0.7 | 292.5 | 0.2004 | 0.026 |
| -0.7 | 307.5 | 0.1856 | 0.0231 |
| -0.7 | 322.5 | 0.1787 | 0.0255 |
| -0.7 | 337.5 | 0.254 | 0.0407 |
| -0.7 | 352.5 | 0.2613 | 0.0336 |
| -0.5 | 7.5 | 0.1457 | 0.0251 |
| -0.5 | 22.5 | 0.1769 | 0.0338 |
| -0.5 | 37.5 | 0.1408 | 0.0202 |
| -0.5 | 52.5 | 0.1709 | 0.0228 |
| -0.5 | 67.5 | 0.2457 | 0.0337 |
| -0.5 | 82.5 | 0.2525 | 0.0323 |
| -0.5 | 97.5 | 0.1905 | 0.0201 |
| -0.5 | 112.5 | 0.1407 | 0.0161 |
| -0.5 | 127.5 | 0.1553 | 0.0174 |
| -0.5 | 142.5 | 0.1458 | 0.0206 |
| -0.5 | 157.5 | 0.0837 | 0.0126 |
| -0.5 | 172.5 | 0.0658 | 0.0094 |
| -0.5 | 187.5 | 0.0711 | 0.01 |
| -0.5 | 202.5 | 0.0957 | 0.013 |
| -0.5 | 217.5 | 0.0709 | 0.0122 |
| -0.5 | 232.5 | 0.0736 | 0.0105 |
| -0.5 | 247.5 | 0.1534 | 0.0168 |
| -0.5 | 262.5 | 0.1247 | 0.0138 |
| -0.5 | 277.5 | 0.1985 | 0.0248 |
| -0.5 | 292.5 | 0.1218 | 0.0195 |
| -0.5 | 307.5 | 0.1625 | 0.0205 |
| -0.5 | 322.5 | 0.1179 | 0.0188 |
| -0.5 | 337.5 | 0.0596 | 0.0214 |
| -0.5 | 352.5 | 0.1456 | 0.0234 |
| -0.3 | 7.5 | 0.0382 | 0.0131 |
| -0.3 | 22.5 | 0.1184 | 0.0424 |
| -0.3 | 37.5 | 0.1463 | 0.0236 |
| -0.3 | 52.5 | 0.1639 | 0.0338 |
| -0.3 | 67.5 | 0.1827 | 0.0391 |
| -0.3 | 82.5 | 0.2072 | 0.0359 |
| -0.3 | 97.5 | 0.229 | 0.0222 |
| -0.3 | 112.5 | 0.2242 | 0.0208 |
| -0.3 | 127.5 | 0.1936 | 0.0197 |
| -0.3 | 142.5 | 0.1737 | 0.0215 |
| -0.3 | 157.5 | 0.112 | 0.0135 |
| -0.3 | 172.5 | 0.0921 | 0.0099 |
| -0.3 | 187.5 | 0.1151 | 0.0113 |
| -0.3 | 202.5 | 0.1294 | 0.0158 |
| -0.3 | 217.5 | 0.133 | 0.0182 |
| -0.3 | 247.5 | 0.2407 | 0.0224 |
| -0.3 | 277.5 | 0.2995 | 0.0287 |
| -0.3 | 292.5 | 0.2793 | 0.0375 |
| -0.3 | 307.5 | 0.2339 | 0.028 |
| -0.3 | 322.5 | 0.2933 | 0.0631 |
| -0.3 | 352.5 | 0.0904 | 0.0225 |
| -0.1 | 22.5 | 0.1096 | 0.0228 |
| -0.1 | 37.5 | 0.2601 | 0.036 |
| -0.1 | 52.5 | 0.2339 | 0.0702 |
| -0.1 | 67.5 | 0.2294 | 0.0524 |
| -0.1 | 82.5 | 0.261 | 0.0389 |
| -0.1 | 97.5 | 0.3003 | 0.0254 |
| -0.1 | 112.5 | 0.2373 | 0.0225 |
| -0.1 | 127.5 | 0.3295 | 0.0384 |
| -0.1 | 142.5 | 0.2356 | 0.0261 |
| -0.1 | 157.5 | 0.1891 | 0.0168 |
| -0.1 | 172.5 | 0.1622 | 0.0127 |
| -0.1 | 187.5 | 0.1489 | 0.0113 |
| -0.1 | 202.5 | 0.2135 | 0.0181 |
| -0.1 | 217.5 | 0.283 | 0.0282 |
| -0.1 | 232.5 | 0.277 | 0.0291 |
| -0.1 | 247.5 | 0.2339 | 0.0215 |
| -0.1 | 262.5 | 0.2465 | 0.0207 |
| -0.1 | 277.5 | 0.3414 | 0.0335 |
| 0.1 | 22.5 | 0.1715 | 0.0335 |
| 0.1 | 37.5 | 0.3373 | 0.0652 |
| 0.1 | 52.5 | 0.3932 | 0.0764 |
| 0.1 | 67.5 | 0.5221 | 0.0854 |
| 0.1 | 82.5 | 0.5753 | 0.0749 |
| 0.1 | 97.5 | 0.4651 | 0.0562 |
| 0.1 | 112.5 | 0.3565 | 0.0394 |
| 0.1 | 127.5 | 0.3203 | 0.0406 |
| 0.1 | 142.5 | 0.1828 | 0.0239 |
| 0.1 | 157.5 | 0.156 | 0.0179 |
| 0.1 | 172.5 | 0.1289 | 0.0128 |
| 0.1 | 187.5 | 0.1255 | 0.0123 |
| 0.1 | 202.5 | 0.1381 | 0.0163 |
| 0.1 | 217.5 | 0.2167 | 0.0288 |
| 0.1 | 232.5 | 0.2091 | 0.0305 |
| 0.1 | 247.5 | 0.2736 | 0.0346 |
| 0.1 | 262.5 | 0.399 | 0.0547 |
| 0.1 | 277.5 | 0.5328 | 0.0955 |
| 0.1 | 292.5 | 0.4465 | 0.0936 |
| 0.1 | 307.5 | 0.4122 | 0.1057 |
| 0.1 | 337.5 | 0.2218 | 0.0769 |
| 0.3 | 22.5 | 0.2069 | 0.0439 |
| 0.3 | 37.5 | 0.2701 | 0.0531 |
| 0.3 | 52.5 | 0.3594 | 0.0483 |
| 0.3 | 67.5 | 0.4524 | 0.06 |
| 0.3 | 82.5 | 0.4638 | 0.0907 |
| 0.3 | 97.5 | 0.526 | 0.0667 |
| 0.3 | 112.5 | 0.5279 | 0.0375 |
| 0.3 | 127.5 | 0.341 | 0.0417 |
| 0.3 | 142.5 | 0.2001 | 0.0205 |
| 0.3 | 157.5 | 0.2278 | 0.0211 |
| 0.3 | 172.5 | 0.21 | 0.018 |
| 0.3 | 187.5 | 0.2065 | 0.0182 |
| 0.3 | 202.5 | 0.2206 | 0.0202 |
| 0.3 | 217.5 | 0.2155 | 0.0225 |
| 0.3 | 232.5 | 0.2604 | 0.0368 |
| 0.3 | 247.5 | 0.4591 | 0.0346 |
| 0.3 | 262.5 | 0.3411 | 0.0725 |
| 0.3 | 277.5 | 0.4645 | 0.1292 |
| 0.3 | 292.5 | 0.3988 | 0.083 |
| 0.3 | 307.5 | 0.2891 | 0.0642 |
| 0.3 | 322.5 | 0.264 | 0.0753 |
| 0.3 | 337.5 | 0.2618 | 0.0944 |
| 0.5 | 22.5 | 0.1641 | 0.027 |
| 0.5 | 37.5 | 0.2191 | 0.025 |
| 0.5 | 52.5 | 0.4268 | 0.0423 |
| 0.5 | 67.5 | 0.7505 | 0.0679 |
| 0.5 | 82.5 | 0.7391 | 0.0827 |
| 0.5 | 97.5 | 0.6253 | 0.0769 |
| 0.5 | 112.5 | 0.5039 | 0.1091 |
| 0.5 | 127.5 | 0.3622 | 0.0471 |
| 0.5 | 157.5 | 0.285 | 0.0274 |
| 0.5 | 172.5 | 0.3094 | 0.0246 |
| 0.5 | 187.5 | 0.3373 | 0.0275 |
| 0.5 | 202.5 | 0.2759 | 0.0297 |
| 0.5 | 217.5 | 0.2923 | 0.0315 |
| 0.5 | 232.5 | 0.3872 | 0.0537 |
| 0.5 | 247.5 | 0.5071 | 0.1485 |
| 0.5 | 262.5 | 0.4492 | 0.0797 |
| 0.5 | 277.5 | 0.6733 | 0.1211 |
| 0.5 | 292.5 | 0.4963 | 0.0767 |
| 0.5 | 307.5 | 0.3873 | 0.0545 |
| 0.5 | 322.5 | 0.309 | 0.0413 |
| 0.5 | 337.5 | 0.2338 | 0.0463 |
| 0.7 | 7.5 | 0.1511 | 0.0243 |
| 0.7 | 22.5 | 0.2844 | 0.0488 |
| 0.7 | 37.5 | 0.2854 | 0.0313 |
| 0.7 | 52.5 | 0.4297 | 0.0461 |
| 0.7 | 67.5 | 0.6264 | 0.0584 |
| 0.7 | 82.5 | 1.0074 | 0.0996 |
| 0.7 | 97.5 | 1.1741 | 0.1212 |
| 0.7 | 112.5 | 0.9476 | 0.1471 |
| 0.7 | 127.5 | 0.7976 | 0.0946 |
| 0.7 | 142.5 | 0.733 | 0.0792 |
| 0.7 | 157.5 | 1.1149 | 0.1202 |
| 0.7 | 172.5 | 1.0607 | 0.1124 |
| 0.7 | 187.5 | 0.8276 | 0.1147 |
| 0.7 | 202.5 | 0.8523 | 0.1263 |
| 0.7 | 217.5 | 0.6366 | 0.0719 |
| 0.7 | 232.5 | 0.6663 | 0.0819 |
| 0.7 | 247.5 | 0.8954 | 0.1125 |
| 0.7 | 262.5 | 0.7118 | 0.1048 |
| 0.7 | 277.5 | 0.8559 | 0.1216 |
| 0.7 | 292.5 | 0.5804 | 0.0773 |
| 0.7 | 307.5 | 0.3281 | 0.0432 |
| 0.7 | 322.5 | 0.2965 | 0.0435 |
| 0.7 | 337.5 | 0.3348 | 0.0663 |
| 0.7 | 352.5 | 0.2959 | 0.042 |
| 0.9 | 7.5 | 0.4465 | 0.0284 |
| 0.9 | 22.5 | 0.5395 | 0.0348 |
| 0.9 | 37.5 | 0.5586 | 0.039 |
| 0.9 | 52.5 | 0.4536 | 0.0345 |
| 0.9 | 67.5 | 0.4776 | 0.0335 |
| 0.9 | 82.5 | 0.5334 | 0.0348 |
| 0.9 | 97.5 | 0.521 | 0.0326 |
| 0.9 | 112.5 | 0.4497 | 0.029 |
| 0.9 | 127.5 | 0.5026 | 0.032 |
| 0.9 | 142.5 | 0.5173 | 0.0317 |
| 0.9 | 157.5 | 0.5218 | 0.0326 |
| 0.9 | 172.5 | 0.5179 | 0.0332 |
| 0.9 | 187.5 | 0.5481 | 0.0354 |
| 0.9 | 202.5 | 0.5608 | 0.0344 |
| 0.9 | 217.5 | 0.5363 | 0.0333 |
| 0.9 | 232.5 | 0.5527 | 0.0336 |
| 0.9 | 247.5 | 0.5373 | 0.0351 |
| 0.9 | 262.5 | 0.5676 | 0.0379 |
| 0.9 | 277.5 | 0.5131 | 0.0339 |
| 0.9 | 292.5 | 0.4479 | 0.0312 |
| 0.9 | 307.5 | 0.3789 | 0.0303 |
| 0.9 | 322.5 | 0.5682 | 0.0401 |
| 0.9 | 337.5 | 0.4991 | 0.0331 |
| 0.9 | 352.5 | 0.522 | 0.0329 |
Experiment comment: