Measurement of the branching ratio of the K-L ->pi(+) pi(-) decay with the KLOE detector

doi:10.1016/j.physletb.2006.05.039

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	Measurement of the branching ratio of the K-L ->pi(+) pi(-) decay with the KLOE detector
	KLOE Collaboration
	2006
发表期刊	PHYSICS LETTERS B
卷号	638 期号:2--3 页码:140-145
通讯作者	Antonelli, M (reprint author), Ist Nazl Fis Nucl, Lab Nazl Frascati, Casella Postale 13, I-00044 Frascati, Italy.
摘要	We present a measurement of the branching ratio of the CP violating decay K-L -> pi(+)pi(-) performed by the KLOE experiment at the phi factory DA Phi NE. We use 328pb(-1) of data collected in 2001 and 2002, corresponding to similar to 150 million tagged K-L mesons. We find BR(K-L -> pi(+)pi(-)) = (1.963 +/- 0.012(stat). +/- 0.017(syst.)) x 10(-3). This branching ratio measurement is fully inclusive of final-state radiation. Using the above result, we determine the modulus of the amplitude ratio vertical bar eta(+-)\| to be (2.219 +/- 0.013) x 10(-3) and vertical bar epsilon vertical bar to be (2.216 +/- 0.013) x 10(-3). (c) 2006 Elsevier B.V. All rights reserved.
学科领域	Physics
DOI	10.1016/j.physletb.2006.05.039
收录类别	SCI
语种	英语
WOS类目	Physics, Multidisciplinary
WOS记录号	WOS:000238773900009
引用统计	被引频次：27[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/311005/212686
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	KLOE Collaboration. Measurement of the branching ratio of the K-L ->pi(+) pi(-) decay with the KLOE detector[J]. PHYSICS LETTERS B,2006,638(2--3):140-145.
APA	KLOE Collaboration.(2006).Measurement of the branching ratio of the K-L ->pi(+) pi(-) decay with the KLOE detector.PHYSICS LETTERS B,638(2--3),140-145.
MLA	KLOE Collaboration."Measurement of the branching ratio of the K-L ->pi(+) pi(-) decay with the KLOE detector".PHYSICS LETTERS B 638.2--3(2006):140-145.

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