dorsal/arxiv
View SchemaCalculation of the $^3$He(in-flight $K^-$,$n$) reaction for searching the deeply-bound $K^-pp$ state
| Authors | T. Koike, T. Harada |
|---|---|
| Categories | |
| ArXiv ID | nucl-th/0703037 |
| URL | https://arxiv.org/abs/nucl-th/0703037 |
| DOI | 10.1016/j.physletb.2007.07.038 |
| Journal | Phys.Lett.B652:262-268,2007 |
Abstract
The formation of a deeply-bound $K^-pp$ state by the $^3$He(in-flight $K^-$,$n$) reaction is investigated theoretically in the distorted-wave impulse approximation using the Green's function method. The expected inclusive and semi-exclusive spectra at $p_{K^-}$ = 1.0 GeV/c and $\theta_n = 0^{\circ}$ are calculated for the forthcoming J-PARC E15 experiment. We employ optical potentials between the $K^-$ and ``$pp$'' core-nucleus, and demonstrate systematically the dependence of the spectral shape on $V_0$ and $W_0$, which are the real and imaginary parts of the strength for the optical potential, respectively. The necessary condition to observe a distinct peak of the $K^-pp$ bound state with $I=1/2$, $J^\pi=0^-$ in the spectrum turns out to be that the value of $V_0$ is deeper than $\sim-100$ MeV and $W_0$ shallower than $\sim-100$ MeV, of which the strength parameters come up to recent theoretical predictions.
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"abstract": "The formation of a deeply-bound $K^-pp$ state by the $^3$He(in-flight\n$K^-$,$n$) reaction is investigated theoretically in the distorted-wave impulse\napproximation using the Green\u0027s function method. The expected inclusive and\nsemi-exclusive spectra at $p_{K^-}$ = 1.0 GeV/c and $\\theta_n = 0^{\\circ}$ are\ncalculated for the forthcoming J-PARC E15 experiment. We employ optical\npotentials between the $K^-$ and ``$pp$\u0027\u0027 core-nucleus, and demonstrate\nsystematically the dependence of the spectral shape on $V_0$ and $W_0$, which\nare the real and imaginary parts of the strength for the optical potential,\nrespectively. The necessary condition to observe a distinct peak of the $K^-pp$\nbound state with $I=1/2$, $J^\\pi=0^-$ in the spectrum turns out to be that the\nvalue of $V_0$ is deeper than $\\sim-100$ MeV and $W_0$ shallower than\n$\\sim-100$ MeV, of which the strength parameters come up to recent theoretical\npredictions.",
"arxiv_id": "nucl-th/0703037",
"authors": [
"T. Koike",
"T. Harada"
],
"categories": [
"nucl-th"
],
"doi": "10.1016/j.physletb.2007.07.038",
"journal_ref": "Phys.Lett.B652:262-268,2007",
"title": "Calculation of the $^3$He(in-flight $K^-$,$n$) reaction for searching the deeply-bound $K^-pp$ state",
"url": "https://arxiv.org/abs/nucl-th/0703037"
},
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