dorsal/arxiv
View SchemaSemiclassical Distorted Wave Model Analysis of the $(\pi^-,K^+)$ $\Sigma$ Formation Inclusive Spectrum
| Authors | M. Kohno, Y. Fujiwara, Y. Watanabe, K. Ogata, M. Kawai |
|---|---|
| Categories | |
| ArXiv ID | nucl-th/0611080 |
| URL | https://arxiv.org/abs/nucl-th/0611080 |
| DOI | 10.1103/PhysRevC.74.064613 |
| Journal | Phys.Rev.C74:064613,2006 |
Abstract
$(\pi^-,K^+)$ hyperon production inclusive spectra with $p_\pi =1.2$ GeV/c measured at KEK on $^{12}$C and $^{28}$Si are analyzed by the semiclassical distorted wave model. Single-particle wave functions of the target nucleus are treated using Wigner transformation. This method is able to account for the energy and angular dependences of the elementary process in nuclear medium without introducing the factorization approximation frequently employed. Calculations of the $(\pi^+,K^+)$ $\Lambda$ formation process, for which there is no free parameter since the $\Lambda$ s.p. potential is known, demonstrate that the present model is useful to describe inclusive spectra. It is shown that in order to account for the experimental data of the $\Sigma^-$ formation spectra a repulsive $\Sigma$-nucleus potential is necessary whose magnitude is not so strong as around 100 MeV previously suggested.
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"abstract": "$(\\pi^-,K^+)$ hyperon production inclusive spectra with $p_\\pi =1.2$ GeV/c\nmeasured at KEK on $^{12}$C and $^{28}$Si are analyzed by the semiclassical\ndistorted wave model. Single-particle wave functions of the target nucleus are\ntreated using Wigner transformation. This method is able to account for the\nenergy and angular dependences of the elementary process in nuclear medium\nwithout introducing the factorization approximation frequently employed.\nCalculations of the $(\\pi^+,K^+)$ $\\Lambda$ formation process, for which there\nis no free parameter since the $\\Lambda$ s.p. potential is known, demonstrate\nthat the present model is useful to describe inclusive spectra. It is shown\nthat in order to account for the experimental data of the $\\Sigma^-$ formation\nspectra a repulsive $\\Sigma$-nucleus potential is necessary whose magnitude is\nnot so strong as around 100 MeV previously suggested.",
"arxiv_id": "nucl-th/0611080",
"authors": [
"M. Kohno",
"Y. Fujiwara",
"Y. Watanabe",
"K. Ogata",
"M. Kawai"
],
"categories": [
"nucl-th"
],
"doi": "10.1103/PhysRevC.74.064613",
"journal_ref": "Phys.Rev.C74:064613,2006",
"title": "Semiclassical Distorted Wave Model Analysis of the $(\\pi^-,K^+)$ $\\Sigma$ Formation Inclusive Spectrum",
"url": "https://arxiv.org/abs/nucl-th/0611080"
},
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