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Study of (B)over-bar(0)-> D-0 pi(+)pi(-) decays
Belle Collaboration
2007
发表期刊PHYSICAL REVIEW D
卷号76期号:1
通讯作者Kuzmin, A (reprint author), Budker Inst Nucl Phys, Novosibirsk 630090, Russia.
摘要We report the results of a study of neutral B meson decays to the D-0 pi(+)pi(-) final state, where the D-0 is fully reconstructed. The results are obtained from an event sample containing 388x10(6) B (B) over bar -meson pairs collected in the Belle experiment at the KEKB e(+)e(-) collider. The total branching fraction of the three-body decay B((B) over bar (0)-> D-0 pi(+)pi(-))=(8.4 +/- 0.4(stat)+/- 0.8(syst))x10(-4) has been measured. The intermediate resonant structure of these three-body decays has been studied. From a Dalitz plot analysis we have obtained the product of the branching fractions for D-2(*+) and D-0(*+) production: B((B) over bar (0)-> D-2(*+)pi(-))xB(D-2(*+)-> D-0 pi(+))=(2.15 +/- 0.17(stat)+/- 0.29(syst)+/- 0.12(mod))x10(-4), and B((B) over bar (0)-> D-0(*+)pi(-))xB(D-0(*+)-> D-0 pi(+))=(0.60 +/- 0.13(stat)+/- 0.15(syst)+/- 0.22(mod))x10(-4). This is the first observation of the (B) over bar (0)-> D-0(*+)pi(-) decay. The (B) over bar (0)-> D-0 rho(0) and D(0)f(2) branching fractions are measured to be: B((B) over bar (0)-> D-0 rho(0))=(3.19 +/- 0.20(stat)+/- 0.24(syst)+/- 0.38(mod))x10(-4), and B((B) over bar (0)-> D(0)f(2))=(1.20 +/- 0.18(stat)+/- 0.21(syst)+/- 0.32(mod))x10(-4).
关键词EXCITED CHARM MESONS HEAVY-QUARK E+E ANNIHILATION WIDTHS MASSES
学科领域Astronomy & Astrophysics; Physics
DOI10.1103/PhysRevD.76.012006
收录类别SCI
语种英语
WOS类目Astronomy & Astrophysics ; Physics, Particles & Fields
WOS记录号WOS:000248544300012
引用统计
被引频次:33[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/311005/212827
专题实验物理中心
作者单位中国科学院高能物理研究所
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GB/T 7714
Belle Collaboration. Study of (B)over-bar(0)-> D-0 pi(+)pi(-) decays[J]. PHYSICAL REVIEW D,2007,76(1).
APA Belle Collaboration.(2007).Study of (B)over-bar(0)-> D-0 pi(+)pi(-) decays.PHYSICAL REVIEW D,76(1).
MLA Belle Collaboration."Study of (B)over-bar(0)-> D-0 pi(+)pi(-) decays".PHYSICAL REVIEW D 76.1(2007).
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