The 2009 Europhysics Conference on High Energy Physics

b -> d and other charmless B decays at Belle

18 Jul 2009, 09:15

20m

Large Lecture - Hall A (Kraków, Poland)

Flavour Physics II. Flavour Physics

Speaker

Cheng-Chin CHIANG (National Taiwan University)

Description

Observation of $B^{+}\to \overline{K}{}^{\ast 0}(892)K^{+}$ at Belle We present a measurement of the branching fraction for the process $B^{+}\to \overline{K}{}^{\ast 0}(892)(\to K^{-}{\pi }^{+})K^{+}$ based on a data sample of $657\times {10}^6$ $\mathrm{{\rm Y}}(4S)\to B\overline{B}$ events collected with the Belle detector at the KEKB $e^{+}{e}^{-}$ asymmetric-energy collider. A measurement of the charge asymmetry of $A_{CP}$ for this process is also presented. Measurement of $B^0\to K^{+}{\pi }^{-}{K}^{-}{\pi }^{+}$ Decays and Search for $B^0\to K^{\ast 0}{\overline{K}}^{\ast 0}$ and $B^0\to K^{\ast 0}{K}^{\ast 0}$ We report on a search for the decay $B^0\to K^{\ast 0}{\overline{K}}^{\ast 0}$ and $B^0\to K^{\ast 0}{K}^{\ast 0}$ and other charmless modes with a final $K^{+}{\pi }^{-}{K}^{-}{\pi }^{+}$ state. These results are obtained from a data sample containing $657\times {10}^6$ $B\overline{B}$ pairs collected with the Belle detector at the KEKB asymmetric-energy $e^{+}{e}^{-}$ collider. Search for $B\to \varphi \pi$ decays at Belle We search for the charmless decays $B^{+}\to \varphi {\pi }^{+}$ and $B^0\to \varphi {\pi }^0$, which proceed through an external electroweak penguin diagram in the Standard Model. The analysis is based on a data sample of 657 million $B\overline{B}$ pairs collected at the $\mathrm{{\rm Y}}(4S)$ resonance with the Belle detector at the KEKB $e^{+}{e}^{-}$ storage ring.

Presentation materials

Slides

ccchiang-EPS09.pdf