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Constraints imposed by the data above 1 GeV on the low energy $\pi\pi$ amplitudes
The authors study the influence of the region above 1 GeV on low- energy pi pi amplitudes by using minimum subtracted dispersion relations, in addition to the twice subtracted ones. When the results are compared with the recent phase-shift analysis below 1 GeV, they find that the S-wave isospin-zero...
| Autores principales: | , |
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| Lenguaje: | eng |
| Publicado: |
1974
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| Materias: | |
| Acceso en línea: | https://dx.doi.org/10.1016/0550-3213(74)90267-3 http://cds.cern.ch/record/873515 |
| Sumario: | The authors study the influence of the region above 1 GeV on low- energy pi pi amplitudes by using minimum subtracted dispersion relations, in addition to the twice subtracted ones. When the results are compared with the recent phase-shift analysis below 1 GeV, they find that the S-wave isospin-zero scattering length has to lie between 0.5 and 0.8. (17 refs). |
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