Measurement E141M21
| 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: | 1.89 GeV | |
| Ebeam: | 5.499 GeV | |
| Publication: | ||
| cos(θ) | φ, [degree] | dσ/dΩ, [μb/rad] | uncertainty |
|---|---|---|---|
| -0.9 | 7.5 | 0.0861 | 0.0163 |
| -0.9 | 22.5 | 0.1187 | 0.024 |
| -0.9 | 37.5 | 0.0874 | 0.0188 |
| -0.9 | 52.5 | 0.1317 | 0.0235 |
| -0.9 | 67.5 | 0.1178 | 0.0303 |
| -0.9 | 82.5 | 0.1201 | 0.0467 |
| -0.9 | 97.5 | 0.0586 | 0.0235 |
| -0.9 | 112.5 | 0.0837 | 0.0212 |
| -0.9 | 127.5 | 0.0828 | 0.0216 |
| -0.9 | 142.5 | 0.0992 | 0.0285 |
| -0.9 | 157.5 | 0.0609 | 0.0223 |
| -0.9 | 172.5 | 0.1004 | 0.0295 |
| -0.9 | 187.5 | 0.0748 | 0.0234 |
| -0.9 | 202.5 | 0.0485 | 0.0195 |
| -0.9 | 217.5 | 0.0729 | 0.0269 |
| -0.9 | 232.5 | 0.0927 | 0.0223 |
| -0.9 | 247.5 | 0.1116 | 0.0347 |
| -0.9 | 262.5 | 0.0932 | 0.0234 |
| -0.9 | 277.5 | 0.0986 | 0.0235 |
| -0.9 | 292.5 | 0.1342 | 0.0248 |
| -0.9 | 307.5 | 0.1211 | 0.0206 |
| -0.9 | 322.5 | 0.1251 | 0.0254 |
| -0.9 | 337.5 | 0.0888 | 0.0191 |
| -0.9 | 352.5 | 0.074 | 0.0121 |
| -0.7 | 7.5 | 0.1362 | 0.0207 |
| -0.7 | 22.5 | 0.2166 | 0.0337 |
| -0.7 | 37.5 | 0.1302 | 0.0212 |
| -0.7 | 52.5 | 0.1544 | 0.0197 |
| -0.7 | 67.5 | 0.2465 | 0.0323 |
| -0.7 | 82.5 | 0.23 | 0.046 |
| -0.7 | 97.5 | 0.2319 | 0.0315 |
| -0.7 | 112.5 | 0.1784 | 0.0243 |
| -0.7 | 127.5 | 0.0938 | 0.0138 |
| -0.7 | 142.5 | 0.0538 | 0.0116 |
| -0.7 | 157.5 | 0.0615 | 0.0111 |
| -0.7 | 172.5 | 0.0449 | 0.0085 |
| -0.7 | 187.5 | 0.0425 | 0.0082 |
| -0.7 | 202.5 | 0.074 | 0.0124 |
| -0.7 | 217.5 | 0.0639 | 0.012 |
| -0.7 | 232.5 | 0.1036 | 0.0144 |
| -0.7 | 247.5 | 0.1749 | 0.0232 |
| -0.7 | 262.5 | 0.184 | 0.0269 |
| -0.7 | 277.5 | 0.2466 | 0.0353 |
| -0.7 | 292.5 | 0.2054 | 0.0284 |
| -0.7 | 307.5 | 0.1737 | 0.0214 |
| -0.7 | 322.5 | 0.1584 | 0.0299 |
| -0.7 | 337.5 | 0.1193 | 0.0232 |
| -0.7 | 352.5 | 0.1229 | 0.0194 |
| -0.5 | 7.5 | 0.102 | 0.0173 |
| -0.5 | 22.5 | 0.1553 | 0.0287 |
| -0.5 | 37.5 | 0.108 | 0.0169 |
| -0.5 | 52.5 | 0.1593 | 0.0218 |
| -0.5 | 67.5 | 0.2314 | 0.0311 |
| -0.5 | 82.5 | 0.159 | 0.0222 |
| -0.5 | 97.5 | 0.1762 | 0.0217 |
| -0.5 | 112.5 | 0.1362 | 0.0155 |
| -0.5 | 127.5 | 0.0894 | 0.0117 |
| -0.5 | 142.5 | 0.0805 | 0.0135 |
| -0.5 | 157.5 | 0.058 | 0.0089 |
| -0.5 | 172.5 | 0.0504 | 0.0077 |
| -0.5 | 187.5 | 0.036 | 0.0059 |
| -0.5 | 202.5 | 0.0495 | 0.0087 |
| -0.5 | 217.5 | 0.0731 | 0.0124 |
| -0.5 | 232.5 | 0.07 | 0.01 |
| -0.5 | 247.5 | 0.1215 | 0.014 |
| -0.5 | 262.5 | 0.145 | 0.0173 |
| -0.5 | 277.5 | 0.1536 | 0.0218 |
| -0.5 | 292.5 | 0.1826 | 0.027 |
| -0.5 | 307.5 | 0.1658 | 0.0202 |
| -0.5 | 322.5 | 0.1231 | 0.016 |
| -0.5 | 337.5 | 0.1583 | 0.0342 |
| -0.5 | 352.5 | 0.1119 | 0.0176 |
| -0.3 | 7.5 | 0.0621 | 0.0166 |
| -0.3 | 22.5 | 0.1755 | 0.0418 |
| -0.3 | 37.5 | 0.1367 | 0.0237 |
| -0.3 | 52.5 | 0.1407 | 0.0164 |
| -0.3 | 67.5 | 0.268 | 0.0372 |
| -0.3 | 82.5 | 0.2053 | 0.0248 |
| -0.3 | 97.5 | 0.1698 | 0.02 |
| -0.3 | 112.5 | 0.149 | 0.016 |
| -0.3 | 127.5 | 0.1267 | 0.0156 |
| -0.3 | 142.5 | 0.0762 | 0.0137 |
| -0.3 | 157.5 | 0.0963 | 0.0142 |
| -0.3 | 172.5 | 0.0613 | 0.0082 |
| -0.3 | 187.5 | 0.0643 | 0.0073 |
| -0.3 | 202.5 | 0.0896 | 0.0117 |
| -0.3 | 217.5 | 0.1028 | 0.0152 |
| -0.3 | 232.5 | 0.1059 | 0.0155 |
| -0.3 | 247.5 | 0.1267 | 0.0141 |
| -0.3 | 262.5 | 0.1784 | 0.022 |
| -0.3 | 277.5 | 0.1771 | 0.0213 |
| -0.3 | 292.5 | 0.1719 | 0.0275 |
| -0.3 | 307.5 | 0.1554 | 0.029 |
| -0.3 | 322.5 | 0.1583 | 0.0413 |
| -0.3 | 352.5 | 0.0633 | 0.0168 |
| -0.1 | 7.5 | 0.0491 | 0.0233 |
| -0.1 | 22.5 | 0.1147 | 0.0248 |
| -0.1 | 37.5 | 0.1155 | 0.0202 |
| -0.1 | 52.5 | 0.2507 | 0.0597 |
| -0.1 | 67.5 | 0.2396 | 0.0415 |
| -0.1 | 82.5 | 0.1912 | 0.0235 |
| -0.1 | 97.5 | 0.2467 | 0.0262 |
| -0.1 | 112.5 | 0.1704 | 0.0207 |
| -0.1 | 127.5 | 0.1727 | 0.0218 |
| -0.1 | 142.5 | 0.167 | 0.0196 |
| -0.1 | 157.5 | 0.1069 | 0.0115 |
| -0.1 | 172.5 | 0.0879 | 0.0085 |
| -0.1 | 187.5 | 0.0994 | 0.0094 |
| -0.1 | 202.5 | 0.1139 | 0.0115 |
| -0.1 | 217.5 | 0.1528 | 0.0179 |
| -0.1 | 232.5 | 0.1245 | 0.0163 |
| -0.1 | 247.5 | 0.1505 | 0.0176 |
| -0.1 | 262.5 | 0.1909 | 0.0197 |
| -0.1 | 277.5 | 0.1606 | 0.0183 |
| -0.1 | 292.5 | 0.1705 | 0.0448 |
| 0.1 | 22.5 | 0.1161 | 0.0308 |
| 0.1 | 37.5 | 0.2997 | 0.0581 |
| 0.1 | 52.5 | 0.4154 | 0.091 |
| 0.1 | 67.5 | 0.4039 | 0.0718 |
| 0.1 | 82.5 | 0.3928 | 0.0625 |
| 0.1 | 97.5 | 0.2838 | 0.0419 |
| 0.1 | 112.5 | 0.2394 | 0.0369 |
| 0.1 | 127.5 | 0.1424 | 0.0238 |
| 0.1 | 142.5 | 0.1293 | 0.0184 |
| 0.1 | 157.5 | 0.114 | 0.0141 |
| 0.1 | 172.5 | 0.0955 | 0.0116 |
| 0.1 | 187.5 | 0.1065 | 0.0124 |
| 0.1 | 202.5 | 0.1 | 0.0137 |
| 0.1 | 217.5 | 0.1424 | 0.0204 |
| 0.1 | 232.5 | 0.1392 | 0.0229 |
| 0.1 | 247.5 | 0.2199 | 0.0346 |
| 0.1 | 262.5 | 0.279 | 0.0439 |
| 0.1 | 277.5 | 0.2271 | 0.0533 |
| 0.1 | 292.5 | 0.5702 | 0.0831 |
| 0.1 | 322.5 | 0.2748 | 0.0931 |
| 0.3 | 7.5 | 0.0517 | 0.0405 |
| 0.3 | 22.5 | 0.0787 | 0.0183 |
| 0.3 | 37.5 | 0.1414 | 0.0383 |
| 0.3 | 52.5 | 0.1263 | 0.0284 |
| 0.3 | 67.5 | 0.36 | 0.0507 |
| 0.3 | 82.5 | 0.4355 | 0.0724 |
| 0.3 | 97.5 | 0.4191 | 0.0629 |
| 0.3 | 112.5 | 0.3413 | 0.0476 |
| 0.3 | 127.5 | 0.2712 | 0.0409 |
| 0.3 | 157.5 | 0.2275 | 0.0234 |
| 0.3 | 172.5 | 0.2074 | 0.0187 |
| 0.3 | 187.5 | 0.2199 | 0.0195 |
| 0.3 | 202.5 | 0.2295 | 0.0237 |
| 0.3 | 232.5 | 0.2944 | 0.043 |
| 0.3 | 247.5 | 0.2619 | 0.0519 |
| 0.3 | 262.5 | 0.4203 | 0.1199 |
| 0.3 | 277.5 | 0.4652 | 0.1098 |
| 0.3 | 292.5 | 0.2798 | 0.0619 |
| 0.3 | 307.5 | 0.2672 | 0.0633 |
| 0.3 | 322.5 | 0.1735 | 0.0647 |
| 0.5 | 22.5 | 0.1252 | 0.0246 |
| 0.5 | 37.5 | 0.1923 | 0.0203 |
| 0.5 | 52.5 | 0.3662 | 0.0383 |
| 0.5 | 67.5 | 0.5106 | 0.0526 |
| 0.5 | 82.5 | 0.5303 | 0.0587 |
| 0.5 | 97.5 | 0.6421 | 0.0778 |
| 0.5 | 112.5 | 0.5279 | 0.1247 |
| 0.5 | 127.5 | 0.3844 | 0.0697 |
| 0.5 | 142.5 | 0.272 | 0.0343 |
| 0.5 | 157.5 | 0.2843 | 0.0319 |
| 0.5 | 172.5 | 0.2536 | 0.0244 |
| 0.5 | 187.5 | 0.2578 | 0.0246 |
| 0.5 | 202.5 | 0.3008 | 0.0339 |
| 0.5 | 217.5 | 0.3627 | 0.0441 |
| 0.5 | 232.5 | 0.3578 | 0.0588 |
| 0.5 | 247.5 | 0.505 | 0.1114 |
| 0.5 | 262.5 | 0.5058 | 0.0954 |
| 0.5 | 277.5 | 0.4675 | 0.0854 |
| 0.5 | 292.5 | 0.4553 | 0.0671 |
| 0.5 | 307.5 | 0.31 | 0.0458 |
| 0.5 | 322.5 | 0.1693 | 0.028 |
| 0.5 | 337.5 | 0.157 | 0.0425 |
| 0.7 | 7.5 | 0.122 | 0.0262 |
| 0.7 | 22.5 | 0.224 | 0.0426 |
| 0.7 | 37.5 | 0.1932 | 0.0214 |
| 0.7 | 52.5 | 0.2326 | 0.024 |
| 0.7 | 67.5 | 0.5578 | 0.0529 |
| 0.7 | 82.5 | 0.7363 | 0.0775 |
| 0.7 | 97.5 | 0.5652 | 0.1275 |
| 0.7 | 112.5 | 0.6984 | 0.1238 |
| 0.7 | 127.5 | 0.6764 | 0.0987 |
| 0.7 | 142.5 | 0.8719 | 0.1395 |
| 0.7 | 157.5 | 1.173 | 0.206 |
| 0.7 | 172.5 | 0.9823 | 0.1642 |
| 0.7 | 187.5 | 0.8628 | 0.148 |
| 0.7 | 202.5 | 0.9792 | 0.1893 |
| 0.7 | 217.5 | 0.7997 | 0.1355 |
| 0.7 | 232.5 | 0.8133 | 0.1071 |
| 0.7 | 247.5 | 0.8171 | 0.1283 |
| 0.7 | 262.5 | 0.6053 | 0.1035 |
| 0.7 | 277.5 | 0.4397 | 0.1167 |
| 0.7 | 292.5 | 0.3136 | 0.0621 |
| 0.7 | 307.5 | 0.1853 | 0.0281 |
| 0.7 | 322.5 | 0.1895 | 0.0289 |
| 0.7 | 337.5 | 0.1574 | 0.0336 |
| 0.7 | 352.5 | 0.2144 | 0.0397 |
| 0.9 | 7.5 | 0.4333 | 0.0261 |
| 0.9 | 22.5 | 0.3689 | 0.0253 |
| 0.9 | 37.5 | 0.3876 | 0.0295 |
| 0.9 | 52.5 | 0.3816 | 0.0316 |
| 0.9 | 67.5 | 0.5391 | 0.0436 |
| 0.9 | 82.5 | 0.4328 | 0.0464 |
| 0.9 | 97.5 | 0.3872 | 0.0437 |
| 0.9 | 112.5 | 0.3726 | 0.0253 |
| 0.9 | 127.5 | 0.4304 | 0.0273 |
| 0.9 | 142.5 | 0.4337 | 0.0273 |
| 0.9 | 157.5 | 0.4526 | 0.0291 |
| 0.9 | 172.5 | 0.4228 | 0.0268 |
| 0.9 | 187.5 | 0.4423 | 0.0288 |
| 0.9 | 202.5 | 0.3968 | 0.0258 |
| 0.9 | 217.5 | 0.3889 | 0.0255 |
| 0.9 | 232.5 | 0.4077 | 0.0261 |
| 0.9 | 247.5 | 0.4571 | 0.0313 |
| 0.9 | 262.5 | 0.3884 | 0.0436 |
| 0.9 | 277.5 | 0.4481 | 0.0479 |
| 0.9 | 292.5 | 0.4884 | 0.0423 |
| 0.9 | 307.5 | 0.4711 | 0.0371 |
| 0.9 | 322.5 | 0.488 | 0.0333 |
| 0.9 | 337.5 | 0.395 | 0.0269 |
| 0.9 | 352.5 | 0.4381 | 0.0261 |
Experiment comment: