dorsal/arxiv
View SchemaThe Eta-Nucleon Scattering Length and Effective Range
| Authors | A. M. Green, S. Wycech |
|---|---|
| Categories | |
| ArXiv ID | nucl-th/9703009 |
| URL | https://arxiv.org/abs/nucl-th/9703009 |
| DOI | 10.1103/PhysRevC.55.R2167 |
| Journal | Phys.Rev.C55:2167-2170,1997 |
Abstract
The coupled eta N, pi 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 and gamma N -> eta N data in an energy range of about 100MeV each side of the eta threshold. In the notation T^(-1)+iq_(eta) = 1/a + (r_0)/2 q^2_(eta) + s q^4_(eta), q_(eta) being the momentum in the eta N center-of-mass, the resulting effective range parameters for eta N scattering are found to be a(fm) = 0.75(4)-i0.27(3), r_0(fm) = -1.50(13)-i0.24(4) and s(fm^3) = -0.10(2)-i0.01(1)
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"abstract": "The coupled eta N, pi N system is described by a K-matrix method. The\nparameters in this model are adjusted to get an optimal fit to pi N -\u003e pi N, pi\nN -\u003e eta N and gamma N -\u003e eta N data in an energy range of about 100MeV each\nside of the eta threshold. In the notation T^(-1)+iq_(eta) = 1/a + (r_0)/2\nq^2_(eta) + s q^4_(eta), q_(eta) being the momentum in the eta N\ncenter-of-mass, the resulting effective range parameters for eta N scattering\nare found to be a(fm) = 0.75(4)-i0.27(3), r_0(fm) = -1.50(13)-i0.24(4) and\ns(fm^3) = -0.10(2)-i0.01(1)",
"arxiv_id": "nucl-th/9703009",
"authors": [
"A. M. Green",
"S. Wycech"
],
"categories": [
"nucl-th",
"hep-ph"
],
"doi": "10.1103/PhysRevC.55.R2167",
"journal_ref": "Phys.Rev.C55:2167-2170,1997",
"title": "The Eta-Nucleon Scattering Length and Effective Range",
"url": "https://arxiv.org/abs/nucl-th/9703009"
},
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