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Search for an H-Dibaryon with a Mass near 2m(Delta) in Y(1S) and Y(2S) Decays
Belle Collaboration
2013
发表期刊PHYSICAL REVIEW LETTERS
卷号110期号:22
通讯作者Kim, BH (reprint author), Seoul Natl Univ, Seoul 151742, South Korea.
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.
关键词WEAK DECAY DOUBLE HYPERFRAGMENT
学科领域Physics
DOI10.1103/PhysRevLett.110.222002
收录类别SCI
语种英语
WOS类目Physics, Multidisciplinary
WOS记录号WOS:000319807700001
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被引频次:76[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/311005/213543
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. 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).
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