Probe the Strength of Annihilation In BS→π＋π－ Decays Within QCD Factorization

LU Gong-Ru; SU Fang; YANG Ya-Dong; HAO Hong-Jun

近期发现有不法分子冒充我刊与作者联系，借此进行欺诈等不法行为，请广大作者加以鉴别，如遇诈骗行为，请第一时间与我刊编辑部联系确认（《中国物理C》（英文）编辑部电话：010-88235947,010-88236950），并作报警处理。

本刊再次郑重声明：

（1）本刊官方网址为cpc.ihep.ac.cn和https://iopscience.iop.org/journal/1674-1137

（2）本刊采编系统作者中心是投稿的唯一路径，该系统为ScholarOne远程稿件采编系统，仅在本刊投稿网网址（https://mc03.manuscriptcentral.com/cpc）设有登录入口。本刊不接受其他方式的投稿，如打印稿投稿、E-mail信箱投稿等，若以此种方式接收投稿均为假冒。

（3）所有投稿均需经过严格的同行评议、编辑加工后方可发表，本刊不存在所谓的“编辑部内部征稿”。如果有人以“编辑部内部人员”名义帮助作者发稿，并收取发表费用，均为假冒。

《中国物理C》（英文）编辑部

2024年10月30日

Chinese Physics C> 2006, Vol. 30> Issue(6) : 501-506

Probe the Strength of Annihilation In B_S→π^＋π^－ Decays Within QCD Factorization

Department of Physics, Henan Normal University, Xinxiang 453007, China

Abstract
HTML
Reference
Related

PDF

Abstract：
Using the method of QCD factorization, we calculate the branching ratio and the CP violation for pure annihilation decay B_S→π^＋π^－ in the Standard Model. Meanwhile, we employ an effective gluon mass resulted in the study of the infrared behaviour of gluon propagators to avoid the soft endpoint divergence. We find that the CP-averaged branching ratio is about 1.24×10^－7, and the penguin diagram contributions is dominant in this process. The direct CP violation parameter is about －0.05, while the mixing-induced CP asymmetry is a quite large number of 0.18. Once these quantities can be measured in the future LHC-b experiments, studying such a process will enrich our knowledge on the dynamics of the charmless hadronic decay of B-meson and the property of gluon.

[1]	XU Yuan-Guo , ZHOU Li-Hai , LI Bing-Zhong , WANG Ru-Min . Analysis of B_s→φμ⁺μ^- decay within supersymmetry. Chinese Physics C, 2013, 37(6): 063104. doi: 10.1088/1674-1137/37/6/063104
[2]	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
[3]	WANG Shuai-Wei , CHANG Qin , HUANG Jin-Shu , . Fourth generation effects in B_s → π^-K⁺ decay. Chinese Physics C, 2011, 35(9): 808-811. doi: 10.1088/1674-1137/35/9/003
[4]	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
[5]	XU Yuan-Guo , WANG Ru-Min , YANG Ya-Dong . Supersymmetric contributions to B_s→K^－π⁺ decay. Chinese Physics C, 2010, 34(11): 1687-1692. doi: 10.1088/1674-1137/34/11/003
[6]	JI Xiang-Dong , MA Jian-Ping , YUAN Feng . QCD Factorization for Semi-inclusive Deep-Inelastic Scattering at Low Transverse Momentum. Chinese Physics C, 2007, 31(9): 857-859.
[7]	LI Jing-Wu , YOU Fu-Yi . Perturbative QCD Study of B_(s)→φρ Decays. Chinese Physics C, 2007, 31(6): 523-531.
[8]	LU GoNG-Ru , WANG Ru-Min , YANG Ya-Dong . Analysis of the Annihilation Decays B0s,d→J/ψ γ with QCD Factorization. Chinese Physics C, 2005, 29(3): 232-236.
[9]	WU Xiang-Yao , CAO Xue-Lei , YIN Xin-Guo . Nonfactorization in D⁺→K⁰K⁺ Decays. Chinese Physics C, 2004, 28(2): 129-133.
[10]	ZHOU Chun-Mei . Calculation of Normalization Factor of Absolute Intensities of γ Rays Arrising from β^－ Decay. Chinese Physics C, 2004, 28(5): 507-511.
[11]	LI Xin-Qiang , LU Gong-Ru , YANG Ya-Dong . Study of Two-Body Non-leptonic Charmless Bs→vv Decays within QCD Factorization. Chinese Physics C, 2004, 28(12): 1248-1255.
[12]	LI Ying , LU Cai-Dian . Calculation of Rare Decay B⁺→D⁺_sK^*0 in Perturbative QCD Approach. Chinese Physics C, 2003, 27(12): 1062-1066.
[13]	LV Cai-Dian . Toward a Theory of Non-leptonic Two-Body B Decays in QCD. Chinese Physics C, 2002, 26(S1): 20-24.
[14]	DU Dong-Sheng . Infrared Divergence and Twist-3 Wave Functions in QCD Factorization for B→PP Decays. Chinese Physics C, 2002, 26(S1): 11-15.
[15]	YANG Mao-Zhi , YANG Ya-Dong . Two-Body B Decays to Pseudoscalar and Vector Mesons in QCD Factorization Approach. Chinese Physics C, 2002, 26(S1): 34-40.
[16]	Yang Jianjun , Li Guanglie , Huang Tao , Shen Hongqing . Nonperturbative QCD Corrections to One-Gluon Exchange Quark Potentials Under Lorentz Gauge Condition. Chinese Physics C, 1999, 23(7): 665-680.
[17]	Huang Tao , Jin Hongying , Zhang Ailin . Mixing Effect on the Scalar Glueball Mass in QCD Sum Rules. Chinese Physics C, 1999, 23(1): 79-86.
[18]	Lu Gongru , Xiong Zhaohua , Cao Yigang , Wang Xuelei . QCD Correction to Decay B→Xτv_τ in the Technicolor Model. Chinese Physics C, 1997, 21(10): 897-904.
[19]	LUO Ma , KONG Fan-Mei , LIU Hao-Ran . A CLEAR TEST OF α_s IN QCD AT ISR ENERGIES. Chinese Physics C, 1985, 9(6): 669-678.
[20]	SHEN Qi-Xing , WU Ji-Min , LU Jing-Xian , ZHAO Pei-Ying . THE QCD BEHAVIOURS OF THE XF₃ (X, Q²) UP TO THE LEADING LOG IN THE NEUTRINO DEEPINELASTIC PROCESSES. Chinese Physics C, 1983, 7(3): 309-315.

Access

Get Citation

LU Gong-Ru, SU Fang, YANG Ya-Dong and HAO Hong-Jun. Probe the Strength of Annihilation In B_S→π^＋π^－ Decays Within QCD Factorization[J]. Chinese Physics C, 2006, 30(6): 501-506.

LU Gong-Ru, SU Fang, YANG Ya-Dong and HAO Hong-Jun. Probe the Strength of Annihilation In B_S→π^＋π^－ Decays Within QCD Factorization[J]. Chinese Physics C, 2006, 30(6): 501-506. shu

RIS(for EndNote,Reference Manager,ProCite)

BibTex

Txt

Milestone

Received: 2005-07-25
Revised: 2006-01-21

Article Metric

Article Views(2913)
PDF Downloads(627)
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

Probe the Strength of Annihilation In B_S→π^＋π^－ Decays Within QCD Factorization

Corresponding author: SU Fang,

Department of Physics, Henan Normal University, Xinxiang 453007, China

Received Date: 2005-07-25
Accepted Date: 2006-01-21
Available Online: 2006-06-05

Abstract: Using the method of QCD factorization, we calculate the branching ratio and the CP violation for pure annihilation decay B_S→π^＋π^－ in the Standard Model. Meanwhile, we employ an effective gluon mass resulted in the study of the infrared behaviour of gluon propagators to avoid the soft endpoint divergence. We find that the CP-averaged branching ratio is about 1.24×10^－7, and the penguin diagram contributions is dominant in this process. The direct CP violation parameter is about －0.05, while the mixing-induced CP asymmetry is a quite large number of 0.18. Once these quantities can be measured in the future LHC-b experiments, studying such a process will enrich our knowledge on the dynamics of the charmless hadronic decay of B-meson and the property of gluon.