$B \to D^{(*)}$ Form Factors from QCD Light-Cone Sum Rules
| dc.creator | Faller, S. | |
| dc.creator | Khodjamirian, A. | |
| dc.creator | Klein, Ch. | |
| dc.creator | Mannel, Th. | |
| dc.date | 2008-09-01 | |
| dc.date | 2009-02-24 | |
| dc.date.accessioned | 2026-07-07T13:07:33Z | |
| dc.date.available | 2026-07-07T13:07:33Z | |
| dc.description | We derive new QCD sum rules for $B\to D$ and $B\to D^*$ form factors. The underlying correlation functions are expanded near the light-cone in terms of $B$-meson distribution amplitudes defined in HQET, whereas the $c$-quark mass is kept finite. The leading-order contributions of two- and three-particle distribution amplitudes are taken into account. From the resulting light-cone sum rules we calculate all $B\to \Dst $ form factors in the region of small momentum transfer (maximal recoil). In the infinite heavy-quark mass limit the sum rules reduce to a single expression for the Isgur-Wise function. We compare our predictions with the form factors extracted from experimental $B\to \Dst l ν_l$ decay rates fitted to dispersive parameterizations. | |
| dc.description | 20 pages, 6 figures; one reference, one figure and several comments added; version to appear in European Physical Journal C | |
| dc.identifier | https://arxiv.org/abs/0809.0222 | |
| dc.identifier | http://arxiv.org/abs/0809.0222 | |
| dc.identifier | Eur.Phys.J.C60:603-615,2009 | |
| dc.identifier | doi:10.1140/epjc/s10052-009-0968-4 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/228124 | |
| dc.subject | High Energy Physics - Phenomenology | |
| dc.title | $B \to D^{(*)}$ Form Factors from QCD Light-Cone Sum Rules | |
| dc.type | text |