Measurement of theγp→π+nReaction near Threshold
| Autor: | D. M. Skopik, N. R. Kolb, E. Korkmaz, J.C. Bergstrom, D. V. Jordan, Dave Hutcheon, A. K. Opper, G. V. O'Rielly, B.D. Sawatzky, Gerald Feldman, R. E. Pywell |
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| Rok vydání: | 1999 |
| Předmět: | |
| Zdroj: | Physical Review Letters. 83:3609-3612 |
| ISSN: | 1079-7114 0031-9007 |
| Popis: | Differential cross sections for the $\ensuremath{\gamma}p\ensuremath{\rightarrow}{\ensuremath{\pi}}^{+}n$ reaction have been measured at photon energies 1 to 2 MeV above threshold using tagged-photon beams. The electric dipole amplitude ${E}_{0+}$ deduced at threshold is compared to recent predictions from chiral perturbation theory. Constraints on the value of the $\ensuremath{\pi}N$ coupling constant are inferred by combining theory and experiment. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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