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Nonfactorizable contributions to B ->(DM)-M-(*) decays
Keum, YY; Kurimoto, T; Li, HN; Lu, CD; Sanda, AI; Lv CD(吕才典)
2004
发表期刊PHYSICAL REVIEW D
卷号69期号:9页码:94018
通讯作者Nagoya Univ, Dept Phys, Nagoya, Aichi 464, Japan ; Toyama Univ, Fac Sci, Toyama 9308555, Japan ; Acad Sinica, Inst Phys, Taipei 115, Taiwan ; Natl Cheng Kung Univ, Dept Phys, Tainan 701, Taiwan ; CCAST, World Lab, Beijing 100080, Peoples R China ; CAS, Inst High Energy Phys, Beijing 100039, Peoples R China
文章类型Article
摘要While the naive factorization assumption works well for many two-body nonleptonic B meson decay modes, the recent measurement of (B) over bar -->D-(*M-)0(0) with M=pi, rho, and omega shows a large deviation from this assumption. We analyze the B-->(DM)-M-(*) decays in the perturbative QCD approach based on the k(T) factorization theorem, in which both factorizable and nonfactorizable contributions can be calculated in the same framework. Our predictions for the Bauer-Stech-Wirbel parameters, \a(2)/a(1\)=0.43+/-0.04 and Arg(a(2)/a(1))similar to-42degrees and \a(2)/a(1\)=0.47+/-0.05 and Arg(a(2)/a(1))similar to-41degrees, are consistent with the observed B-->Dpi and B-->D(*)pi branching ratios, respectively. It is found that the large magnitude \a(2\) and the large relative phase between a(2) and a(1) come from color-suppressed nonfactorizable amplitudes. Our predictions for the (B) over bar (0)-->D*(0)rho(0),D*(0)omega branching ratios can be confronted with future experimental data.
学科领域Astronomy & Astrophysics; Physics
研究领域[WOS]Astronomy & Astrophysics ; Physics ; Astronomy & Astrophysics ; Physics
DOI10.1103/PhysRevD.69.094018
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语种英语
研究领域[WOS]Astronomy & Astrophysics ; Physics ; Astronomy & Astrophysics ; Physics
WOS类目Astronomy & Astrophysics ; Physics, Particles & Fields
WOS记录号WOS:000221907400031
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被引频次:73[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.ihep.ac.cn/handle/311005/240874
专题理论物理室
作者单位中国科学院高能物理研究所
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Keum, YY,Kurimoto, T,Li, HN,et al. Nonfactorizable contributions to B ->(DM)-M-(*) decays[J]. PHYSICAL REVIEW D,2004,69(9):94018.
APA Keum, YY,Kurimoto, T,Li, HN,Lu, CD,Sanda, AI,&吕才典.(2004).Nonfactorizable contributions to B ->(DM)-M-(*) decays.PHYSICAL REVIEW D,69(9),94018.
MLA Keum, YY,et al."Nonfactorizable contributions to B ->(DM)-M-(*) decays".PHYSICAL REVIEW D 69.9(2004):94018.
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