$B\to Kη,Kη^{\prime}$ Decays
| dc.creator | Pham, T. N. | |
| dc.date | 2008-10-01 | |
| dc.date.accessioned | 2026-07-07T13:09:43Z | |
| dc.date.available | 2026-07-07T13:09:43Z | |
| dc.description | The nonet symmetry scheme seems to describe rather well the masses and $η-η^{\prime}$ mixing angle of the ground state pseudo-scalar mesons and is thus expected to be also a good approximation for the matrix elements of the pseudo-scalar density operators which play an important role in charmless two-body B decays with $η$ or $η^{\prime}$ in the final state. In this talk, I would like to report on a recent work on the $B^{-}\to K^{-}η, K^{-}η^{\prime}$ decay using nonet symmetry for the matrix elements of pseudo-scalar density operators. We find that the branching ratio $B\to PP$, with an $η$ meson in the final state agrees well with data, while those with an $η^{\prime}$ meson are underestimated by $20-30%$. This could be considered as a more or less successful prediction for QCDF, considering the theoretical uncertainties involved. This could also indicate that an additional power-suppressed terms could bring the branching ratio close to experiment, as with the $B\to K^{*}π$ and $B\to K^{*}η$ decay for which the measured branching ratios are much bigger than the QCDF predictions. | |
| dc.description | Talk given at QCD08, the 14th International QCD Conference, 7-12th July 2008, Montpellier (France), LaTeX, 7 pages | |
| dc.identifier | https://arxiv.org/abs/0810.0131 | |
| dc.identifier | http://arxiv.org/abs/0810.0131 | |
| dc.identifier | Nucl.Phys.Proc.Suppl.186:391-394,2009 | |
| dc.identifier | doi:10.1016/j.nuclphysbps.2008.12.088 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/228827 | |
| dc.subject | High Energy Physics - Phenomenology | |
| dc.subject | High Energy Physics - Experiment | |
| dc.title | $B\to Kη,Kη^{\prime}$ Decays | |
| dc.type | text |