https://doi.org/10.1140/epjc/s10052-008-0805-1
Regular Article - Theoretical Physics
NLO contributions to B→KK * decays in the pQCD approach
Department of Physics and Institute of Theoretical Physics, Nanjing Normal University, Nanjing, Jiangsu, 210097, China
* e-mail: xiaozhenjun@njnu.edu.cn
Received:
26
June
2008
Revised:
29
September
2008
Published online:
26
November
2008
We calculate the important next-to-leading-order (NLO) contributions to the B→KK
* decays from the vertex corrections, the quark loops, and the magnetic penguins in the perturbative QCD (pQCD) factorization approach. The pQCD predictions for the CP-averaged branching ratios are
,
,
and Br(B
0→K
+
K
*−+K
−
K
*+)≈1.3×10−7, which agree well with both the experimental upper limits and the predictions based on the QCD factorization approach. Furthermore, the CP violating asymmetries of the considered decay modes are also evaluated. The NLO pQCD predictions for
and
decays are
and
.
PACS: 13.25.Hw – / 12.38.Bx – / 14.40.Nd –
© Springer-Verlag / Società Italiana di Fisica, 2009
