Fourth generation effects in Bs → π-K+ decay

WANG Shuai-Wei; CHANG Qin; HUANG Jin-Shu

doi:10.1088/1674-1137/35/9/003

Chinese Physics C> 2011, Vol. 35> Issue(9) : 808-811 DOI: 10.1088/1674-1137/35/9/003

Fourth generation effects in B_s → π^-K⁺ decay

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Abstract：
We study the effects of the fourth quark generation model in B_s → π^-K⁺ decay. Combining with the up-to-date experimental measurement for B(B_s → π^-K⁺) and A_cp^dir(B_s → π^-K⁺) by the CDF Collaboration, we derive the new bound of weak phase ø_bd, which are 0°< ø_bd <44°, 321°< ø_bd < 360° and 0°< ø_bd < 26°, 342°< ø_bd < 360° for m_t'=400 and 600 GeV respectively. In these regions, B(B_s → π^-K⁺) and A_cp^dir(B_s → 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 B_s → 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 B_s → 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
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通讯作者: 陈斌, bchen63@163.com

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沈阳化工大学材料科学与工程学院沈阳 110142

Fourth generation effects in B_s → π^-K⁺ decay

Corresponding author: WANG Shuai-Wei,

Received Date: 2010-12-01

Accepted Date: 2010-12-30

Available Online: 2011-09-05

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

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Fourth generation effects in B_s → π^-K⁺ decay

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