Systematic few-body analysis of eta-d, eta-3He and eta-4He interaction at low energies
| Autor: | Fix, A., Kolesnikov, O. |
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| Rok vydání: | 2018 |
| Předmět: | |
| Zdroj: | Phys. Rev. C 97, 044001 (2018) |
| Druh dokumentu: | Working Paper |
| DOI: | 10.1103/PhysRevC.97.044001 |
| Popis: | The Alt-Grassberger-Sandhas N-body theory is used to study interaction of eta-mesons with d, 3He, and 4He. Separable expansion of the subamplitudes is adopted to convert the integral equations into the quasi-two-body form. The resulting formalism is applied to fit the existing data for low-energy eta production on few-nucleon targets. On the basis of this fitting procedure the scattering lengths a_{eta d}, a_{eta 3He}, a_{eta 4He} as well as the subthreshold behaviour of the elementary eta-N scattering amplitude are obtained. Comment: 17 pages, 12 figures, 2 tables |
| Databáze: | arXiv |
| Externí odkaz: |
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