Branching ratio and CP asymmetry of Bs→K0*(1430)η(') decays in the PQCD approach

ZHANG Zhi-Qing; WANG Shi-Jian; ZHANG Li-Ying

doi:10.1088/1674-1137/37/4/043103

Chinese Physics C> 2013, Vol. 37> Issue(4) : 043103 DOI: 10.1088/1674-1137/37/4/043103

Branching ratio and CP asymmetry of B_s→K₀^*(1430)η^(') decays in the PQCD approach

Abstract
HTML
Reference
Related

PDF

Abstract：
In the two-quark model supposition for K₀^*(1430), which can be viewed as either the first excited state (Scenario Ⅰ) or the lowest lying state (Scenario Ⅱ), the branching ratios and the direct CP-violating asymmetries for decays B_s⁰→K₀^*0(1430)η^(') are studied by employing the perturbative QCD factorization approach. We find the following results: (a) The CP averaged branching ratios of B_s⁰→K₀^*0(1430)η and B_s⁰→K₀^*0(1430)η' are small and both in the order of 10^-7. If one views K₀^*(1430) as the lowest lying state, B (B_s⁰→K₀^*0(1430)η)≈3.9×10^-7 and B (B_s⁰→K₀^*0(1430)η')≈7.8×10^-7. (b) While the direct CP-violating asymmetries of these two decays are not small: if we still take the parameters of K₀^*(1430) in scenario Ⅱ, A_CP^dir (B_s⁰→K₀^*0(1430)η)≈56.2% and A_CP^dir (B_s⁰→K₀^*0(1430)η')≈2.4%. (c) The annihilation contributions will play an important role in accounting for future data, because both the branching ratios and the direct CP asymmetries of these two decays are sensitive to the annihilation type contributions.

[1]	LIU Xin , ZHANG Zhi-Qing , XIAO Zhen-Jun . B→K₀^*(1430) η^(′) decays in the pQCD approach. Chinese Physics C, 2010, 34(2): 157-164. doi: 10.1088/1674-1137/34/2/001
[2]	Ying Li , Dan-Dan Wang , Cai-Dian Lü . Pure annihilation type B→K0±(1430)K()^干 decays in the family non-universal Z0 model. Chinese Physics C, 2016, 40(1): 013101. doi: 10.1088/1674-1137/40/1/013101
[3]	XING Zhi-Zhong . A test of CPT symmetry in K⁰ vs K⁰→π⁺π^－π⁰ decays. Chinese Physics C, 2010, 34(6): 753-756. doi: 10.1088/1674-1137/34/6/024
[4]	ZHANG Zhi-Qing , XIAO Zhen-Jun . B→f₀(980) (π,η^(′)) decays in the PQCD approach. Chinese Physics C, 2009, 33(7): 508-515. doi: 10.1088/1674-1137/33/7/002
[5]	ZOU Zhi-Tian , ZHOU Rui , LÜ Cai-Dian . Pure annihilation type decays B⁰→D_s^- K₂^*+ and B_s→Da₂ in perturbative QCD approach. Chinese Physics C, 2013, 37(1): 013103. doi: 10.1088/1674-1137/37/1/013103
[6]	ZHANG Zhi-Qing , LIU Xin , XIAO Zhen-Jun . B→πη^(′),η^(′)η^(′)decays and NLO contributions in the pQCD approach. Chinese Physics C, 2009, 33(9): 722-728. doi: 10.1088/1674-1137/33/9/003
[7]	Jing-Juan Qi , Zhen-Yang Wang , Jing Xu , Xin-Heng Guo . Studying the localized CP violation and the branching fraction of the ${\bar{B}^0\rightarrow K^-\pi^+\pi^+\pi^-}$ decay. Chinese Physics C, 2020, 44(10): 103104. doi: 10.1088/1674-1137/abac00
[8]	BAI Wei , LIU Min , FAN Ying-Ying , WANG Wen-Fei , CHENG Shan , XIAO Zhen-Jun . Revisiting the Kπ puzzle in the pQCD factorization approach. Chinese Physics C, 2014, 38(3): 033101. doi: 10.1088/1674-1137/38/3/033101
[9]	DING Wen-Bo , LIU Guang-Zhou . Condensations of K^－ and K⁰ in Neutron Star Matter. Chinese Physics C, 2006, 30(S2): 249-251.
[10]	LIU Xiao-Xia , LÜ Xiao-Rui , ZHU Yong-Sheng . Combined estimation for multi-measurements of branching ratio. Chinese Physics C, 2015, 39(10): 103001. doi: 10.1088/1674-1137/39/10/103001
[11]	LI Hai-Bo , YANG Mao-Zhi . About detecting CP-violating processes in J/ψ→K⁰K⁰ decay. Chinese Physics C, 2009, 33(2): 85-88. doi: 10.1088/1674-1137/33/2/001
[12]	LIU Xin , ZHANG Zhi-Qing , XIAO Zhen-Jun . B→(J/ψ,η_c) K decays in the perturbative QCD approach. Chinese Physics C, 2010, 34(7): 937-943. doi: 10.1088/1674-1137/34/7/002
[13]	M. Ablikim , M. N. Achasov , X. C. Ai , O. Albayrak , M. Albecht , D. J. Ambrose , A. Amoroso . Measurement of the absolute branching fraction of D+→K0e+ve via K0→π0π0. Chinese Physics C, 2016, 40(11): 113001. doi: 10.1088/1674-1137/40/11/113001
[14]	WANG Shuai-Wei , HUANG Jin-Shu , SONG Tai-Ping , LU Gong-Ru . Simultaneous Solution to B_d⁰→φK^*0 Polarization Anomaly and B_d→φK_S CP Asymmetry. Chinese Physics C, 2007, 31(10): 900-906.
[15]	Xue-Qing Hu , Su-Ping Jin , Zhen-Jun Xiao . Semileptonic decays ${{ B}_{ c} \to (\eta_{ c},{ J}/\psi) { l} \bar{\nu}_{ l}}$ in the “PQCD+Lattice” approach. Chinese Physics C, 2020, 44(2): 023104. doi: 10.1088/1674-1137/44/2/023104
[16]	Xue-Qing Hu , Su-Ping Jin , Zhen-Jun Xiao . Semileptonic decays $ {{B/B_s \to (D^{()},D_s^{()}) l \nu_l}} $ in the PQCD approach with the lattice QCD input. Chinese Physics C, 2020, 44(5): 053102. doi: 10.1088/1674-1137/44/5/053102
[17]	ZHANG Zhi-Qing , FU Jian-Hua . Analysis of B→a₁(1260)(b₁(1235))K^* decays in the perturbative QCD approach. Chinese Physics C, 2015, 39(3): 033102. doi: 10.1088/1674-1137/39/3/033102
[18]	Ya Li , Zhou Rui , Zhen-Jun Xiao . P-wave contributions to B_(s)→ψKπ decays in perturbative QCD approach. Chinese Physics C, 2020, 44(7): 073102. doi: 10.1088/1674-1137/44/7/073102
[19]	Rafel Escribano , Sergi González-Solís . A data-driven approach to π⁰, η and η' single and double Dalitz decays. Chinese Physics C, 2018, 42(2): 023109. doi: 10.1088/1674-1137/42/2/023109
[20]	WANG Shuai-Wei , YANG Xing-Qiang , LI Gen-Quan , HUANG Jin-Shu . B_s,d→μ⁺μ^－ decays in a flavor changing Z′ model. Chinese Physics C, 2010, 34(5): 539-542. doi: 10.1088/1674-1137/34/5/004

Access

Get Citation

ZHANG Zhi-Qing, WANG Shi-Jian and ZHANG Li-Ying. Branching ratio and CP asymmetry of B_s→K₀^*(1430)η^(') decays in the PQCD approach[J]. Chinese Physics C, 2013, 37(4): 043103. doi: 10.1088/1674-1137/37/4/043103

RIS(for EndNote,Reference Manager,ProCite)

BibTex

Txt

Milestone

Received: 2012-05-28
Revised: 2012-07-11

Article Metric

Article Views(1363)
PDF Downloads(342)
Cited by(0)

Policy on re-use

To reuse of subscription content published by CPC, the users need to request permission from CPC, unless the content was published under an Open Access license which automatically permits that type of reuse.

通讯作者: 陈斌, bchen63@163.com

1.
沈阳化工大学材料科学与工程学院沈阳 110142

Branching ratio and CP asymmetry of B_s→K₀^*(1430)η^(') decays in the PQCD approach

Corresponding author: ZHANG Zhi-Qing,

Received Date: 2012-05-28
Accepted Date: 2012-07-11
Available Online: 2013-04-05

Abstract: In the two-quark model supposition for K₀^*(1430), which can be viewed as either the first excited state (Scenario Ⅰ) or the lowest lying state (Scenario Ⅱ), the branching ratios and the direct CP-violating asymmetries for decays B_s⁰→K₀^*0(1430)η^(') are studied by employing the perturbative QCD factorization approach. We find the following results: (a) The CP averaged branching ratios of B_s⁰→K₀^*0(1430)η and B_s⁰→K₀^*0(1430)η' are small and both in the order of 10^-7. If one views K₀^*(1430) as the lowest lying state, B (B_s⁰→K₀^*0(1430)η)≈3.9×10^-7 and B (B_s⁰→K₀^*0(1430)η')≈7.8×10^-7. (b) While the direct CP-violating asymmetries of these two decays are not small: if we still take the parameters of K₀^*(1430) in scenario Ⅱ, A_CP^dir (B_s⁰→K₀^*0(1430)η)≈56.2% and A_CP^dir (B_s⁰→K₀^*0(1430)η')≈2.4%. (c) The annihilation contributions will play an important role in accounting for future data, because both the branching ratios and the direct CP asymmetries of these two decays are sensitive to the annihilation type contributions.