dorsal/arxiv
View SchemaComment on "Comparison of Potential Models with the PP Scattering Data Below 350 Mev"
| Authors | G. Q. Li, R. Machleidt |
|---|---|
| Categories | |
| ArXiv ID | nucl-th/9304022 |
| URL | https://arxiv.org/abs/nucl-th/9304022 |
Abstract
We point out two flaws in the recent test of nucleon-nucleon (NN) potentials conducted by Stoks and de Swart. First, in some cases, the neutron-proton ($np$) version of an NN potential was compared to the proton-proton ($pp$) data, which is improper and yields (large) $\chi^2$ that are essentially meaningless. Second, for a proper test of the quantitative nature of a NN potential, it is insufficient to compare to $pp$ data only, since this leaves the T=0 potential untested. Thus, it can happen that the $pp$ version of a potential predicts the $pp$ data accurately, while the $np$ version of that same potential is poor in $np$ (where also the T=0 potential is involved). An example for this is the Nijmegen potential, which predicts the $pp$ data well with a $\chi^2$/datum of 2.0, but yields a $\chi^2$/datum of 6.5 in $np$.
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"abstract": "We point out two flaws in the recent test of nucleon-nucleon (NN) potentials\nconducted by Stoks and de Swart. First, in some cases, the neutron-proton\n($np$) version of an NN potential was compared to the proton-proton ($pp$)\ndata, which is improper and yields (large) $\\chi^2$ that are essentially\nmeaningless. Second, for a proper test of the quantitative nature of a NN\npotential, it is insufficient to compare to $pp$ data only, since this leaves\nthe T=0 potential untested. Thus, it can happen that the $pp$ version of a\npotential predicts the $pp$ data accurately, while the $np$ version of that\nsame potential is poor in $np$ (where also the T=0 potential is involved). An\nexample for this is the Nijmegen potential, which predicts the $pp$ data well\nwith a $\\chi^2$/datum of 2.0, but yields a $\\chi^2$/datum of 6.5 in $np$.",
"arxiv_id": "nucl-th/9304022",
"authors": [
"G. Q. Li",
"R. Machleidt"
],
"categories": [
"nucl-th"
],
"title": "Comment on \"Comparison of Potential Models with the PP Scattering Data Below 350 Mev\"",
"url": "https://arxiv.org/abs/nucl-th/9304022"
},
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