dorsal/arxiv
View SchemaElectromagnetic decays of vector mesons as derived from QCD sum rules
| Authors | Shi-lin Zhu, W. -Y. P. Hwang, Ze-sen Yang |
|---|---|
| Categories | |
| ArXiv ID | nucl-th/9802043 |
| URL | https://arxiv.org/abs/nucl-th/9802043 |
| DOI | 10.1016/S0370-2693(97)01524-4 |
| Journal | Phys.Lett. B420 (1998) 8-12 |
Abstract
We apply the method of QCD sum rules in the presence of external electromagnetic fields $F_{\mu\nu}$ to the problem of the electromagnetic decays of various vector mesons, such as $\rho\to\pi\gamma$, $K^\ast\to K\gamma$ and $\eta'\to\rho\gamma$. The induced condensates obtained previously from the study of baryon magnetic moments are adopted, thereby ensuring the parameter-free nature of the present calculation. Further consistency is reinforced by invoking various QCD sum rules for the meson masses. The numerical results on the various radiative decays agree very well with the experimental data.
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"abstract": "We apply the method of QCD sum rules in the presence of external\nelectromagnetic fields $F_{\\mu\\nu}$ to the problem of the electromagnetic\ndecays of various vector mesons, such as $\\rho\\to\\pi\\gamma$, $K^\\ast\\to\nK\\gamma$ and $\\eta\u0027\\to\\rho\\gamma$. The induced condensates obtained previously\nfrom the study of baryon magnetic moments are adopted, thereby ensuring the\nparameter-free nature of the present calculation. Further consistency is\nreinforced by invoking various QCD sum rules for the meson masses. The\nnumerical results on the various radiative decays agree very well with the\nexperimental data.",
"arxiv_id": "nucl-th/9802043",
"authors": [
"Shi-lin Zhu",
"W. -Y. P. Hwang",
"Ze-sen Yang"
],
"categories": [
"nucl-th"
],
"doi": "10.1016/S0370-2693(97)01524-4",
"journal_ref": "Phys.Lett. B420 (1998) 8-12",
"title": "Electromagnetic decays of vector mesons as derived from QCD sum rules",
"url": "https://arxiv.org/abs/nucl-th/9802043"
},
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