Uncertainty in the leading order PQCD calculations of $B$ meson decays
| dc.creator | Kurimoto, Takeshi | |
| dc.date | 2006-05-10 | |
| dc.date | 2006-06-29 | |
| dc.date.accessioned | 2026-07-07T10:41:34Z | |
| dc.date.available | 2026-07-07T10:41:34Z | |
| dc.description | Uncertainty in the PQCD calculation of B decays is investigated in $B\to π$, $B\to D$ transition form factors and $B\to Dπ$ decay amplitudes. $B$ meson distributionamplitude dependence is studied by taking three kinds of distribution amplitude so far suggested. It is found that almost same $q^2$ dependence of the form factors can be obtained irrespective of the types of the $B$ meson distribution amplitude by suitably choosing one parameter. $B\to Dπ$ process shows the difference due to the distribution amplitude. The effect of the sub-leading component of the $B$ mesondistribution amplitude is also studied in the three processes. The numerical results of calculations with the sub-leading component can be well approximated by the leading order calculation with a suitable choice of the distribution amplitude parameters. | |
| dc.description | 21pages, 13 figures; more discussions on RGE scale dependence and 1/M effects are added; typos are corrected | |
| dc.identifier | https://arxiv.org/abs/hep-ph/0605112 | |
| dc.identifier | http://arxiv.org/abs/hep-ph/0605112 | |
| dc.identifier | Phys.Rev.D74:014027,2006 | |
| dc.identifier | doi:10.1103/PhysRevD.74.014027 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/181658 | |
| dc.subject | High Energy Physics - Phenomenology | |
| dc.title | Uncertainty in the leading order PQCD calculations of $B$ meson decays | |
| dc.type | text |