dorsal/arxiv
View SchemaOptimal Fermi-averaging t-matrix for ($\pi^+$,$K^+$) reactions in $\Lambda$ quasi-free region
| Authors | T. Harada, Y. Hirabayashi |
|---|---|
| Categories | |
| ArXiv ID | nucl-th/0407044 |
| URL | https://arxiv.org/abs/nucl-th/0407044 |
Abstract
We propose an optimal Fermi-averaging for an elementary $\pi^+$+$n$$\to$$K^+$+$\Lambda$ t-matrix under the on-energy-shell condition, in order to describe ($\pi^+$,$K^+$) reactions on a nuclear target in the framework of a distorted-wave impulse approximation. We apply it to calculate $\Lambda$ quasi-free spectra from $^{12}$C($\pi^+$,$K^+$) reactions at $p_\pi$= 1.20 GeV/c and 1.05 GeV/c, and compare them with experimental data. The results show that the calculated spectra are in excellent agreement with the data, because the energy-dependence originates from the nature of the optimal Fermi-averaging t-matrix.
{
"annotation_id": "06d25980-18e8-4491-b039-8e9fe94a44cf",
"date_created": "2026-03-02T18:00:01.188000Z",
"date_modified": "2026-03-02T18:00:01.188000Z",
"file_hash": "bcf4f42c21fbb0149f334f3982d547d4a43adc0a67f3fd914e2ac29375657d39",
"private": false,
"record": {
"abstract": "We propose an optimal Fermi-averaging for an elementary\n$\\pi^+$+$n$$\\to$$K^+$+$\\Lambda$ t-matrix under the on-energy-shell condition,\nin order to describe ($\\pi^+$,$K^+$) reactions on a nuclear target in the\nframework of a distorted-wave impulse approximation. We apply it to calculate\n$\\Lambda$ quasi-free spectra from $^{12}$C($\\pi^+$,$K^+$) reactions at $p_\\pi$=\n1.20 GeV/c and 1.05 GeV/c, and compare them with experimental data. The results\nshow that the calculated spectra are in excellent agreement with the data,\nbecause the energy-dependence originates from the nature of the optimal\nFermi-averaging t-matrix.",
"arxiv_id": "nucl-th/0407044",
"authors": [
"T. Harada",
"Y. Hirabayashi"
],
"categories": [
"nucl-th"
],
"title": "Optimal Fermi-averaging t-matrix for ($\\pi^+$,$K^+$) reactions in $\\Lambda$ quasi-free region",
"url": "https://arxiv.org/abs/nucl-th/0407044"
},
"schema_id": "dorsal/arxiv",
"source": {
"execution_id": "35edfb91-8dda-4bbe-9e33-cc574454d5e1",
"id": "arXiv Dataset IDs",
"type": "Model",
"variant": "snapshot-2026-03-01",
"version": "0.1.0"
},
"user_id": 1000002
}