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Branching ratios, forward-backward asymmetry, and angular distributions of B -> K(1)l(+)l(-) decays
Liu YR(刘言锐); Lv CD(吕才典); Wang W(王伟); Li, RH; Lu, CD; Wang, W
2009
发表期刊PHYSICAL REVIEW D
卷号79期号:9页码:94024
通讯作者[Li, Run-Hui ; Lue, Cai-Dian ; Wang, Wei] Inst High Energy Phys, Beijing 100049, Peoples R China ; [Li, Run-Hui] Shandong Univ, Sch Phys, Jinan 250100, Peoples R China ; [Lue, Cai-Dian] Theoret Phys Ctr Sci Facil, Beijing 100049, Peoples R China
文章类型Article
摘要Using the B -> K-1 form factors evaluated in the perturbative QCD approach, we study semileptonic B -> K-1(1270)l(+)l(-) and B -> K-1(1400)l(+)l(-) decays, where K-1(1270) and K-1(1400) are mixtures of K-1A and K-1B which are P-3(1) and P-1(1) states, respectively. Using the technique of helicity amplitudes, we express the decay amplitudes in terms of several independent and Lorentz invariant pieces. We study the dilepton invariant mass distributions, branching ratios, polarizations, and forward-backward asymmetries of B -> K(1)l(+)l(-) decays. The ambiguity in the sign of the mixing angle will induce very large differences to branching ratios of semileptonic B decays: branching ratios without resonant contributions either have the order of 10(-6) or 10(-8). But the polarizations and the forward-backward asymmetries are not sensitive to the mixing angles. We find that the resonant contributions will dramatically change the dilepton invariant mass distributions in the resonant region. We also provide the angular distributions of B -> K(1)l(+)l(-)->(K pi pi)l(+)l(-) decays.
学科领域Astronomy & Astrophysics; Physics
研究领域[WOS]Astronomy & Astrophysics ; Physics ; Astronomy & Astrophysics ; Physics
DOI10.1103/PhysRevD.79.094024
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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:000266501800043
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被引频次:9[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/311005/240880
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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Liu YR,Lv CD,Wang W,et al. Branching ratios, forward-backward asymmetry, and angular distributions of B -> K(1)l(+)l(-) decays[J]. PHYSICAL REVIEW D,2009,79(9):94024.
APA 刘言锐,吕才典,王伟,Li, RH,Lu, CD,&Wang, W.(2009).Branching ratios, forward-backward asymmetry, and angular distributions of B -> K(1)l(+)l(-) decays.PHYSICAL REVIEW D,79(9),94024.
MLA 刘言锐,et al."Branching ratios, forward-backward asymmetry, and angular distributions of B -> K(1)l(+)l(-) decays".PHYSICAL REVIEW D 79.9(2009):94024.
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