Branching fraction measurement of (B)over-bar(0)-> D(*)+pi(-) and B--> D-(*)0 pi(-) and isospin analysis of (B)over-bar -> D-(*)pi decays
BaBar Collaboration
刊名PHYSICAL REVIEW D
2007
卷号75期号:3
关键词B-MESONS
学科分类Astronomy & Astrophysics; Physics
DOI10.1103/PhysRevD.75.031101
通讯作者Aubert, B (reprint author), Lab Phys & Particules, F-74941 Annecy Le Vieux, France.
英文摘要Using 65 X 10(6) Y (4S) -> BB events collected with the BABAR detector at the PEP-II e(+) e(-) storage ring at the Stanford Linear Accelerator Center, we measure the color-favored branching fractions B(B-0 -> D+ pi(-)) = (2.55 +/- 0.05 +/- 0.16) X 10(-3), B(B-0 -> D*(+) pi(-)) = (2.79 +/- 0.08 +/- 0.17) X 10(-3), B(B- -> D-0 pi(-)) = (4.90 +/- 0.07 +/- 0.22) X 10(-3) and B(B- -> D*(0)pi(-)) = (5.52 +/- 0.17 +/- 0.42) X 10(-3), where the first error is statistical and the second is systematic. With these results and the current world average for the branching fraction for the color-suppressed decay B-0 -> D-(*()0)pi(0), the cosines of the strong phase difference delta between the I =1/2 and I = 3/2 isospin amplitudes are determined to be cos delta = 0.872(-0.007 - 0.029)(+0.008+0.031) for the B -> D pi process and cos delta = 0.924(-0.017 - 0.054)(+ 0.019 + 0.063) for the B -> D*pi process. Under the isospin symmetry, the results for cos delta suggest the presence of final-state interactions in the D pi system.
类目[WOS]Astronomy & Astrophysics ; Physics, Particles & Fields
收录类别SCI
语种英语
WOS记录号WOS:000244534800001
引用统计
被引频次:3[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/311005/212786
专题中国科学院高能物理研究所_实验物理中心_期刊论文
作者单位中国科学院高能物理研究所
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BaBar Collaboration. Branching fraction measurement of (B)over-bar(0)-> D(*)+pi(-) and B--> D-(*)0 pi(-) and isospin analysis of (B)over-bar -> D-(*)pi decays[J]. PHYSICAL REVIEW D,2007,75(3).
APA BaBar Collaboration.(2007).Branching fraction measurement of (B)over-bar(0)-> D(*)+pi(-) and B--> D-(*)0 pi(-) and isospin analysis of (B)over-bar -> D-(*)pi decays.PHYSICAL REVIEW D,75(3).
MLA BaBar Collaboration."Branching fraction measurement of (B)over-bar(0)-> D(*)+pi(-) and B--> D-(*)0 pi(-) and isospin analysis of (B)over-bar -> D-(*)pi decays".PHYSICAL REVIEW D 75.3(2007).
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