Measurement of charmless B decays to eta K-* and eta rho

doi:10.1103/PhysRevD.75.092005

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	*Measurement of charmless B decays to eta K- and eta rho**
	Belle Collaboration
	2007
发表期刊	PHYSICAL REVIEW D
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
学科领域	Astronomy & Astrophysics; Physics
DOI	10.1103/PhysRevD.75.092005
收录类别	SCI
语种	英语
WOS类目	Astronomy & Astrophysics ; Physics, Particles & Fields
WOS记录号	WOS:000246891300010
引用统计	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/311005/212819
专题	实验物理中心
作者单位	中国科学院高能物理研究所
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).
APA	Belle Collaboration.(2007).Measurement of charmless B decays to eta K-* and eta rho.PHYSICAL REVIEW D,75(9).
MLA	Belle Collaboration."Measurement of charmless B decays to eta K-* and eta rho".PHYSICAL REVIEW D 75.9(2007).

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