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Measurement of CP asymmetries and branching fractions in a time-dependent Dalitz analysis of B(0)->(rho pi)(0) and a constraint on the quark mixing angle phi(2)
Belle Collaboration
2008
发表期刊PHYSICAL REVIEW D
卷号77期号:7
通讯作者Kusaka, A (reprint author), Univ Tokyo, Dept Phys, Tokyo, Japan.
摘要We present the results of a time-dependent Dalitz plot analysis of B(0)->pi(+)pi(-)pi(0) decays based on a 414 fb(-1) data sample that contains 449x10(6)B (B) over bar pairs. The data were collected on the Upsilon(4S) resonance with the Belle detector at the KEKB asymmetric energy e(+)e(-) collider. Combining our analysis with information on charged B decay modes, we perform a full Dalitz and isospin analysis and obtain a constraint on the quark mixing angle phi(2), 68 degrees rho(+/-)(770)pi(-/+) and B(0)->rho(0)(770)pi(0) are measured to be (22.6 +/- 1.1[stat]+/- 4.4[syst])x10(-6) and (3.0 +/- 0.5[stat]+/- 0.7[syst])x10(-6), respectively. These are the first branching fraction measurements of the process B(0)->rho(770)pi with the lowest resonance rho(770) explicitly separated from the radial excitations.
关键词B-DECAYS PI(-)PI(+)PI(+) DECAY ISOSPIN ANALYSIS VIOLATION MESON BELLE DETECTOR PHYSICS MATRIX RHO
学科领域Astronomy & Astrophysics; Physics
DOI10.1103/PhysRevD.77.072001
收录类别SCI
语种英语
WOS类目Astronomy & Astrophysics ; Physics, Particles & Fields
WOS记录号WOS:000255457800004
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文献类型期刊论文
条目标识符http://ir.ihep.ac.cn/handle/311005/212852
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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Belle Collaboration. Measurement of CP asymmetries and branching fractions in a time-dependent Dalitz analysis of B(0)->(rho pi)(0) and a constraint on the quark mixing angle phi(2)[J]. PHYSICAL REVIEW D,2008,77(7).
APA Belle Collaboration.(2008).Measurement of CP asymmetries and branching fractions in a time-dependent Dalitz analysis of B(0)->(rho pi)(0) and a constraint on the quark mixing angle phi(2).PHYSICAL REVIEW D,77(7).
MLA Belle Collaboration."Measurement of CP asymmetries and branching fractions in a time-dependent Dalitz analysis of B(0)->(rho pi)(0) and a constraint on the quark mixing angle phi(2)".PHYSICAL REVIEW D 77.7(2008).
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