dorsal/arxiv
View Schemaeta-Nucleon Scattering Length and Effective Range uncertainties
| Authors | A. M. Green, S. Wycech |
|---|---|
| Categories | |
| ArXiv ID | nucl-th/0411024 |
| URL | https://arxiv.org/abs/nucl-th/0411024 |
| DOI | 10.1103/PhysRevC.71.014001 10.1103/PhysRevC.72.029902 |
| Journal | Phys.Rev.C71:014001,2005; Erratum-ibid.C72:029902,2005 |
Abstract
The coupled eta-N, pi-N, gamma-N, 2pi-N system is described by a K-matrix method. The parameters in this model are adjusted to get an optimal fit to pi-N-->pi-N, pi-N-->eta-N, gamma-N-->pi-N and gamma-N-->eta-N data in an energy range of about 100 MeV or so each side of the eta-threshold. Compared with our earlier analysis, we now utilize recent Crystal Ball data. However, the outcome confirms our previous result that the eta-nucleon scattering length (a) is large with a value of 0.91(6)+i0.27(2) fm.
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"abstract": "The coupled eta-N, pi-N, gamma-N, 2pi-N system is described by a K-matrix\nmethod. The parameters in this model are adjusted to get an optimal fit to\npi-N--\u003epi-N, pi-N--\u003eeta-N, gamma-N--\u003epi-N and gamma-N--\u003eeta-N data in an energy\nrange of about 100 MeV or so each side of the eta-threshold. Compared with our\nearlier analysis, we now utilize recent Crystal Ball data. However, the outcome\nconfirms our previous result that the eta-nucleon scattering length (a) is\nlarge with a value of 0.91(6)+i0.27(2) fm.",
"arxiv_id": "nucl-th/0411024",
"authors": [
"A. M. Green",
"S. Wycech"
],
"categories": [
"nucl-th"
],
"doi": "10.1103/PhysRevC.71.014001 10.1103/PhysRevC.72.029902",
"journal_ref": "Phys.Rev.C71:014001,2005; Erratum-ibid.C72:029902,2005",
"title": "eta-Nucleon Scattering Length and Effective Range uncertainties",
"url": "https://arxiv.org/abs/nucl-th/0411024"
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