dorsal/arxiv
View SchemaPion interaction with the trinucleon up to the eta production threshold
| Authors | S. S. Kamalov, L. Tiator, C. Bennhold |
|---|---|
| Categories | |
| ArXiv ID | nucl-th/9301004 |
| URL | https://arxiv.org/abs/nucl-th/9301004 |
| DOI | 10.1103/PhysRevC.47.941 |
| Journal | Phys.Rev.C47:941-956,1993 |
Abstract
Pion elastic, charge exchange scattering and induced eta production on the trinucleon systems are investigated in a coupled-channels approach in momentum space with Fadeev wave functions. The channel $\pi N \rightarrow \eta N$ is included using an isobar model with S-, P-, and D-wave resonances. While the coherent reactions like $^3$He($\pi,\pi)^3$He can be reasonably well reproduced up to $T_{\pi}$=500 MeV, large discrepancies appear for the incoherent processes, $^3$He($\pi^-,\pi^0)^3$H and $^3$He($\pi^-,\eta)^3$H at backward angles and energies above $\Delta$-resonance. In the forward direction the $(\pi,\eta)$ calculations underestimate the experimental measurements very close to threshold but agreement with the data improves with increasing pion energy. Predictions are made for the asymmetries of the various reactions on polarized $^3$He.
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"abstract": "Pion elastic, charge exchange scattering and induced eta production on the\ntrinucleon systems are investigated in a coupled-channels approach in momentum\nspace with Fadeev wave functions. The channel $\\pi N \\rightarrow \\eta N$ is\nincluded using an isobar model with S-, P-, and D-wave resonances. While the\ncoherent reactions like $^3$He($\\pi,\\pi)^3$He can be reasonably well reproduced\nup to $T_{\\pi}$=500 MeV, large discrepancies appear for the incoherent\nprocesses, $^3$He($\\pi^-,\\pi^0)^3$H and $^3$He($\\pi^-,\\eta)^3$H at backward\nangles and energies above $\\Delta$-resonance. In the forward direction the\n$(\\pi,\\eta)$ calculations underestimate the experimental measurements very\nclose to threshold but agreement with the data improves with increasing pion\nenergy. Predictions are made for the asymmetries of the various reactions on\npolarized $^3$He.",
"arxiv_id": "nucl-th/9301004",
"authors": [
"S. S. Kamalov",
"L. Tiator",
"C. Bennhold"
],
"categories": [
"nucl-th"
],
"doi": "10.1103/PhysRevC.47.941",
"journal_ref": "Phys.Rev.C47:941-956,1993",
"title": "Pion interaction with the trinucleon up to the eta production threshold",
"url": "https://arxiv.org/abs/nucl-th/9301004"
},
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