dorsal/arxiv
View SchemaSemileptonic decays of heavy mesons
| Authors | M. A. Ivanov, Yu. L. Kalinovsky, P. Maris, C. D. Roberts |
|---|---|
| Categories | |
| ArXiv ID | nucl-th/9704039 |
| URL | https://arxiv.org/abs/nucl-th/9704039 |
| DOI | 10.1016/S0370-2693(97)01323-3 |
| Journal | Phys.Lett.B416:29-35,1998 |
Abstract
The semileptonic and leptonic decays of heavy mesons are studied as a phenomenological application and exploration of a heavy-quark limit of Dyson-Schwinger equations. The single form factor, $\xi(w)$, which characterises the semileptonic decay in this limit, is calculated and compares well with recent experimental extractions. We obtain a lower bound of 1/3 on the slope-parameter $\rho^2 \equiv -\xi^\prime(1)$, which, in calculations with realistic input, is exceeded by a great deal: agreement with experimental data requiring $\rho^2 \sim 1.2 - 1.6$. The flavour and momentum dependence of the light-quark propagators has observable consequences.
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"abstract": "The semileptonic and leptonic decays of heavy mesons are studied as a\nphenomenological application and exploration of a heavy-quark limit of\nDyson-Schwinger equations. The single form factor, $\\xi(w)$, which\ncharacterises the semileptonic decay in this limit, is calculated and compares\nwell with recent experimental extractions. We obtain a lower bound of 1/3 on\nthe slope-parameter $\\rho^2 \\equiv -\\xi^\\prime(1)$, which, in calculations with\nrealistic input, is exceeded by a great deal: agreement with experimental data\nrequiring $\\rho^2 \\sim 1.2 - 1.6$. The flavour and momentum dependence of the\nlight-quark propagators has observable consequences.",
"arxiv_id": "nucl-th/9704039",
"authors": [
"M. A. Ivanov",
"Yu. L. Kalinovsky",
"P. Maris",
"C. D. Roberts"
],
"categories": [
"nucl-th",
"hep-ph"
],
"doi": "10.1016/S0370-2693(97)01323-3",
"journal_ref": "Phys.Lett.B416:29-35,1998",
"title": "Semileptonic decays of heavy mesons",
"url": "https://arxiv.org/abs/nucl-th/9704039"
},
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