dorsal/arxiv
View SchemaThe $K^\ast K\pi$ and $\rho\pi\pi$ couplings in QCD
| Authors | Shi-Lin Zhu |
|---|---|
| Categories | |
| ArXiv ID | nucl-th/9811086 |
| URL | https://arxiv.org/abs/nucl-th/9811086 |
| DOI | 10.1007/s100500050230 |
| Journal | Eur.Phys.J. A4 (1999) 277-281 |
Abstract
The light cone QCD sum rules are derived for the $K^\ast K\pi$ coupling $g_{K^\ast K\pi} $ and the $\rho\pi\pi$ coupling $g_{\rho\pi\pi}$. The contribution from the excited states and the continuum is subtracted cleanly through the double Borel transform with respect to the two external momenta, $p_1^2$, $p_2^2=(p-q)^2$. Our result $g_{K^\ast K\pi}=(8.7\pm 0.5)$ and $g_{\rho\pi\pi}=(11.5\pm 0.8)$ is in good agreement with the experimental value.
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"abstract": "The light cone QCD sum rules are derived for the $K^\\ast K\\pi$ coupling\n$g_{K^\\ast K\\pi} $ and the $\\rho\\pi\\pi$ coupling $g_{\\rho\\pi\\pi}$. The\ncontribution from the excited states and the continuum is subtracted cleanly\nthrough the double Borel transform with respect to the two external momenta,\n$p_1^2$, $p_2^2=(p-q)^2$. Our result $g_{K^\\ast K\\pi}=(8.7\\pm 0.5)$ and\n$g_{\\rho\\pi\\pi}=(11.5\\pm 0.8)$ is in good agreement with the experimental\nvalue.",
"arxiv_id": "nucl-th/9811086",
"authors": [
"Shi-Lin Zhu"
],
"categories": [
"nucl-th"
],
"doi": "10.1007/s100500050230",
"journal_ref": "Eur.Phys.J. A4 (1999) 277-281",
"title": "The $K^\\ast K\\pi$ and $\\rho\\pi\\pi$ couplings in QCD",
"url": "https://arxiv.org/abs/nucl-th/9811086"
},
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