dorsal/arxiv
View SchemaDetermination of the $\pi NN$ form factor from the threshold pion production of $pp$ scattering
| Authors | T. -S. H. Lee |
|---|---|
| Categories | |
| ArXiv ID | nucl-th/9502005 |
| URL | https://arxiv.org/abs/nucl-th/9502005 |
Abstract
It is shown that the threshold productions of $\pi^0 pp$, $\pi^+ np$ and $\pi^+ d$ from $pp$ collisions can be consistently described by a model consisting of a pion s-wave rescattering and $N\bar N$ pair-terms of heavy-meson exchanges. The large difference between $\sigma^{tot} (pp\rightarrow\pi ^+ d)$ and $\sigma^{tot} (pp\rightarrow\pi ^+ np)$ is understood from the orthogonality of the deuteron and the $np$ scattering wave functions. In a calculation using the Paris potential to account for the initial and final $NN$ interactions, it is found that the data can be best reproduced by using a soft $\pi NN$ form factor with $\Lambda_{\pi} =650 $ MeV for a monopole form. This is consistent with an earlier study of pion production in the $\Delta$ excitation region.
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"abstract": "It is shown that the threshold productions of $\\pi^0 pp$, $\\pi^+ np$ and\n$\\pi^+ d$ from $pp$ collisions can be consistently described by a model\nconsisting of a pion s-wave rescattering and $N\\bar N$ pair-terms of\nheavy-meson exchanges. The large difference between $\\sigma^{tot}\n(pp\\rightarrow\\pi ^+ d)$ and $\\sigma^{tot} (pp\\rightarrow\\pi ^+ np)$ is\nunderstood from the orthogonality of the deuteron and the $np$ scattering wave\nfunctions. In a calculation using the Paris potential to account for the\ninitial and final $NN$ interactions, it is found that the data can be best\nreproduced by using a soft $\\pi NN$ form factor with $\\Lambda_{\\pi} =650 $ MeV\nfor a monopole form. This is consistent with an earlier study of pion\nproduction in the $\\Delta$ excitation region.",
"arxiv_id": "nucl-th/9502005",
"authors": [
"T. -S. H. Lee"
],
"categories": [
"nucl-th"
],
"title": "Determination of the $\\pi NN$ form factor from the threshold pion production of $pp$ scattering",
"url": "https://arxiv.org/abs/nucl-th/9502005"
},
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