Fourth generation effects in Bs → π-K+ decay

  • We study the effects of the fourth quark generation model in Bs → π-K+ decay. Combining with the up-to-date experimental measurement for B(Bs → π-K+) and Acpdir(Bs → π-K+) by the CDF Collaboration, we derive the new bound of weak phase øbd, which are 0°< øbd <44°, 321°< øbd < 360° and 0°< øbd < 26°, 342°< øbd < 360° for mt'=400 and 600 GeV respectively. In these regions, B(Bs → π-K+) and Acpdir(Bs → π-K+) consist with the current experimental data within errors.
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WANG Shuai-Wei, CHANG Qin, HUANG Jin-Shu and Fourth generation effects in Bs → π-K+ decay[J]. Chinese Physics C, 2011, 35(9): 808-811. doi: 10.1088/1674-1137/35/9/003
WANG Shuai-Wei, CHANG Qin, HUANG Jin-Shu and Fourth generation effects in Bs → π-K+ decay[J]. Chinese Physics C, 2011, 35(9): 808-811.  doi: 10.1088/1674-1137/35/9/003 shu
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Received: 2010-12-01
Revised: 2010-12-30
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Fourth generation effects in Bs → π-K+ decay

    Corresponding author: WANG Shuai-Wei,

Abstract: We study the effects of the fourth quark generation model in Bs → π-K+ decay. Combining with the up-to-date experimental measurement for B(Bs → π-K+) and Acpdir(Bs → π-K+) by the CDF Collaboration, we derive the new bound of weak phase øbd, which are 0°< øbd <44°, 321°< øbd < 360° and 0°< øbd < 26°, 342°< øbd < 360° for mt'=400 and 600 GeV respectively. In these regions, B(Bs → π-K+) and Acpdir(Bs → π-K+) consist with the current experimental data within errors.

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