$B \to K K^{*}$ Decays in the Perturbative QCD Approach
| dc.creator | Guo, Libo | |
| dc.creator | Xu, Qian-gui | |
| dc.creator | Xiao, Zhen-jun | |
| dc.date | 2006-09-01 | |
| dc.date | 2006-12-07 | |
| dc.date.accessioned | 2026-07-07T11:05:39Z | |
| dc.date.available | 2026-07-07T11:05:39Z | |
| dc.description | We calculate the branching ratios and CP-violating asymmetries for $B^0 \to K^{0} \ov K^{*0}$, $\ov K^{0} K^{*0}$, $K^+ K^{*-}$, $K^- K^{*+}$, and $B^+\to K^+ \ov K^{*0}$ and $ \ov K^0 K^{*+} $ decays by employing the low energy effective Hamiltonian and the perturbative QCD (pQCD) factorization approach. The theoretical predictions for the branching ratios are $Br(B^0/\ov B^0 \to K^{\pm} K^{*\mp}) \approx 7.4 \times 10^{-8}$, $Br(B^0/\ov B^0 \to K^{0} \ov K^{*0}(\ov K^{0} K^{*0})) \approx 19.6 \times 10^{-7}$, $Br(B^+\to K^+ \ov K^{*0}) \approx 3 \times 10^{-7}$ and $Br(B^+\to K^{*+} \ov K^0) \approx 18.3 \times 10^{-7}$, which are consistent with currently available experimental upper limits. We also predict large CP-violating asymmetries in these decays: $A_{CP}^{dir}(K^\pm \ov K^{*0})\approx -20 %$, $A_{CP}^{dir}(K^{*\pm} \ov K^0)\approx -49%$, which can be tested by the forthcoming B meson experiments. | |
| dc.description | 25 pages, 7 figures, RevTex, some corrections on the numerical results and contents, typos removed, new references added | |
| dc.identifier | https://arxiv.org/abs/hep-ph/0609005 | |
| dc.identifier | http://arxiv.org/abs/hep-ph/0609005 | |
| dc.identifier | Phys.Rev.D75:014019,2007 | |
| dc.identifier | doi:10.1103/PhysRevD.75.014019 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/189268 | |
| dc.subject | High Energy Physics - Phenomenology | |
| dc.title | $B \to K K^{*}$ Decays in the Perturbative QCD Approach | |
| dc.type | text |