Gluonic contribution to $B\to η^{(\prime)}$ form factors
| dc.creator | Charng, Yeo-Yie | |
| dc.creator | Kurimoto, T. | |
| dc.creator | Li, Hsiang-nan | |
| dc.date | 2006-09-18 | |
| dc.date | 2007-01-03 | |
| dc.date.accessioned | 2026-07-07T12:40:45Z | |
| dc.date.available | 2026-07-07T12:40:45Z | |
| dc.description | We calculate the flavor-singlet contribution to the $B\toη^{(\prime)}$ transition form factors from the gluonic content of the $η^{(\prime)}$ meson in the large-recoil region using the perturbative QCD approach. The formulation for the $η$-$η'$ mixing in the quark-flavor and singlet-octet schemes is compared, and employed to determine the chiral enhancement scales associated with the two-parton twist-3 $η^{(\prime)}$ meson distribution amplitudes. It is found that the gluonic contribution is negligible in the $B\toη$ form factors, and reaches few percents in the $B\toη'$ ones. Its impact on the accommodation of the measured $B\toη^{(\prime)} K$ branching ratios in the perturbative QCD and QCD-improved factorization approaches is elaborated. | |
| dc.description | 13 pages, 9 figures, a missing overall coefficient was included into the gluonic contribution. The numerical results were revised accordingly | |
| dc.identifier | https://arxiv.org/abs/hep-ph/0609165 | |
| dc.identifier | http://arxiv.org/abs/hep-ph/0609165 | |
| dc.identifier | Phys.Rev.D74:074024,2006; Phys.Rev.D78:059901,2008 | |
| dc.identifier | doi:10.1103/PhysRevD.74.074024 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/219537 | |
| dc.subject | High Energy Physics - Phenomenology | |
| dc.title | Gluonic contribution to $B\to η^{(\prime)}$ form factors | |
| dc.type | text |