Search for an H-Dibaryon with a Mass near 2m(Delta) in Y(1S) and Y(2S) Decays

	Search for an H-Dibaryon with a Mass near 2m(Delta) in Y(1S) and Y(2S) Decays
	Belle Collaboration
刊名	PHYSICAL REVIEW LETTERS
	2013
卷号	110 期号:22
关键词	WEAK DECAY DOUBLE HYPERFRAGMENT
通讯作者	Kim, BH (reprint author), Seoul Natl Univ, Seoul 151742, South Korea.
英文摘要	We report the results of a high-statistics search for H dibaryon production in inclusive Y(1S) and Y(2S) decays. No indication of an H dibaryon with a mass near the M-H = 2m Lambda threshold is seen in either the H -> p pi(-) or Lambda Lambda decay channels and 90% confidence level branching-fraction upper limits are set that are between one and two orders of magnitude below the measured branching fractions for inclusive Y(1S) and Y(2S) decays to antideuterons. Since Y(1S, 2S) decays produce flavor- SU(3)- symmetric final states, these results put stringent constraints on H dibaryon properties. The results are based on analyses of 102 million Y(1S) and 158 million Y(2S) events collected with the Belle detector at the KEKB e(+)e(-) collider.
学科主题	Physics
类目[WOS]	Physics, Multidisciplinary
收录类别	SCI
语种	英语
WOS记录号	WOS:000319807700001
公开日期	2016-02-26
内容类型	期刊论文
源URL	[http://ir.ihep.ac.cn/handle/311005/213543]
专题	高能物理研究所_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. Search for an H-Dibaryon with a Mass near 2m(Delta) in Y(1S) and Y(2S) Decays[J]. PHYSICAL REVIEW LETTERS,2013,110(22).
APA	Belle Collaboration.(2013).Search for an H-Dibaryon with a Mass near 2m(Delta) in Y(1S) and Y(2S) Decays.PHYSICAL REVIEW LETTERS,110(22).
MLA	Belle Collaboration."Search for an H-Dibaryon with a Mass near 2m(Delta) in Y(1S) and Y(2S) Decays".PHYSICAL REVIEW LETTERS 110.22(2013).