| Measurement of charmless B decays to eta K-* and eta rho |
| Belle Collaboration
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| 2007
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发表期刊 | PHYSICAL REVIEW D
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卷号 | 75期号:9 |
通讯作者 | Wang, CH (reprint author), Natl Cent Univ, Miaoli, Taiwan.
|
摘要 | We report measurements of branching fractions and CP asymmetries for B ->eta K-* and B ->eta rho decays. These results are obtained from a 414 fb(-1) data sample collected at the Upsilon(4S) resonance with the Belle detector at the KEKB asymmetric-energy e(+)e(-) collider. We measure the following branching fractions: B(B-0 ->eta K-*0)=(15.2 +/- 1.2 +/- 1.0)x10(-6) and B(B+->eta K*+)=(19.3(-1.9)(+2.0)+/- 1.5)x10(-6), where the first error is statistical and the second systematic. We also find a 2.7 sigma excess in the B+->eta rho(+) mode and measure B(B+->eta rho(+))=(4.1(-1.3)(+1.4)+/- 0.4)x10(-6)< 6.5x10(-6) at 90% confidence level. For B-0 ->eta rho(0) decays, we determine the upper limit B(B-0 ->eta rho(0))< 1.9x10(-6) at 90% confidence level. The partial rate asymmetries are A(CP)(eta K-*0)=0.17 +/- 0.08 +/- 0.01, A(CP)(eta K*+)=0.03 +/- 0.10 +/- 0.01, and A(CP)(eta rho(+))=-0.04(-0.32)(+0.34)+/- 0.01. |
关键词 | LUND MONTE-CARLO
JET FRAGMENTATION
MESON DECAYS
E+E-PHYSICS
BELLE
DETECTOR
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学科领域 | Astronomy & Astrophysics; Physics
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DOI | 10.1103/PhysRevD.75.092005
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收录类别 | SCI
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语种 | 英语
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WOS类目 | Astronomy & Astrophysics
; Physics, Particles & Fields
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WOS记录号 | WOS:000246891300010
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引用统计 |
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文献类型 | 期刊论文
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条目标识符 | http://ir.ihep.ac.cn/handle/311005/212819
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专题 | 实验物理中心
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作者单位 | 中国科学院高能物理研究所
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推荐引用方式 GB/T 7714 |
Belle Collaboration. Measurement of charmless B decays to eta K-* and eta rho[J]. PHYSICAL REVIEW D,2007,75(9).
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APA |
Belle Collaboration.(2007).Measurement of charmless B decays to eta K-* and eta rho.PHYSICAL REVIEW D,75(9).
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MLA |
Belle Collaboration."Measurement of charmless B decays to eta K-* and eta rho".PHYSICAL REVIEW D 75.9(2007).
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文件名:
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915.pdf
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Adobe PDF
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