dorsal/arxiv
View SchemaFaddeev calculation of a $K^- p p$ quasi-bound state
| Authors | N. V. Shevchenko, A. Gal, J. Mares |
|---|---|
| Categories | |
| ArXiv ID | nucl-th/0610022 |
| URL | https://arxiv.org/abs/nucl-th/0610022 |
| DOI | 10.1103/PhysRevLett.98.082301 |
| Journal | Phys.Rev.Lett.98:082301,2007 |
Abstract
We report on the first genuinely three-body ${\bar K}NN - \pi \Sigma N$ coupled-channel Faddeev calculation in search for quasi-bound states in the $K^- p p$ system. The main absorptivity in the $K^- p$ subsystem is accounted for by fitting to $K^- p$ data near threshold. Our calculation yields one such quasi-bound state, with $I=1/2$, $J^{\pi}=0^-$, bound in the range $B \sim 55-70$ MeV, with a width of $\Gamma \sim 95-110$ MeV. These results differ substantially from previous estimates, and are at odds with the $K^- p p \to \Lambda p$ signal observed by the FINUDA collaboration.
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"abstract": "We report on the first genuinely three-body ${\\bar K}NN - \\pi \\Sigma N$\ncoupled-channel Faddeev calculation in search for quasi-bound states in the\n$K^- p p$ system. The main absorptivity in the $K^- p$ subsystem is accounted\nfor by fitting to $K^- p$ data near threshold. Our calculation yields one such\nquasi-bound state, with $I=1/2$, $J^{\\pi}=0^-$, bound in the range $B \\sim\n55-70$ MeV, with a width of $\\Gamma \\sim 95-110$ MeV. These results differ\nsubstantially from previous estimates, and are at odds with the $K^- p p \\to\n\\Lambda p$ signal observed by the FINUDA collaboration.",
"arxiv_id": "nucl-th/0610022",
"authors": [
"N. V. Shevchenko",
"A. Gal",
"J. Mares"
],
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"nucl-th"
],
"doi": "10.1103/PhysRevLett.98.082301",
"journal_ref": "Phys.Rev.Lett.98:082301,2007",
"title": "Faddeev calculation of a $K^- p p$ quasi-bound state",
"url": "https://arxiv.org/abs/nucl-th/0610022"
},
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