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Lifetime of doubly charmed baryons
Chang, CH; Li, T; Li, XQ; Wang, YM; Wang YM(王玉明)
2008
发表期刊COMMUNICATIONS IN THEORETICAL PHYSICS
卷号49期号:4页码:993-1000
通讯作者[Chang, Chao-Hsi] CCAST, World Lab, Beijing 100080, Peoples R China ; [Chang, Chao-Hsi] Acad Sinica, Inst Theoret Phys, Beijing 100080, Peoples R China ; [Li, Tong ; Li, Xue-Qian] Nankai Univ, Dept Phys, Tianjin 300071, Peoples R China ; [Wang, Yu-Ming] Chinese Acad Sci, Inst High Energy Phys, Beijing 100049, Peoples R China
摘要n this work, we evaluate the lifetimes of the doubly charmed baryons Xi(+)(cc), Xi(++)(cc) and Omega(+)(cc). We carefully calculate the non-spectator contributions at the quark level, where the Cabibbo-suppressed diagrams are also included. The hadronic matrix elements are evaluated in the simple non-relativistic harmonic oscillator model. Our numerical results are generally consistent with that obtained by other authors who used the diquark model. However, all the theoretical predictions on the lifetimes are one order larger than the upper limit set by the recent SELEX measurement. This discrepancy would be clarified by the future experiment. If more accurate experiment still confirms the value of the SELEX collaboration, there must be some unknown mechanism to be explored.
文章类型Article
关键词doubly charmed baryons harmonic oscillator model
学科领域Physics
研究领域[WOS]Physics
URL查看原文
语种英语
WOS类目Physics, Multidisciplinary
WOS记录号WOS:000255100900038
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被引频次:12[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/311005/238857
专题理论物理室
作者单位中国科学院高能物理研究所
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GB/T 7714
Chang, CH,Li, T,Li, XQ,et al. Lifetime of doubly charmed baryons[J]. COMMUNICATIONS IN THEORETICAL PHYSICS,2008,49(4):993-1000.
APA Chang, CH,Li, T,Li, XQ,Wang, YM,&王玉明.(2008).Lifetime of doubly charmed baryons.COMMUNICATIONS IN THEORETICAL PHYSICS,49(4),993-1000.
MLA Chang, CH,et al."Lifetime of doubly charmed baryons".COMMUNICATIONS IN THEORETICAL PHYSICS 49.4(2008):993-1000.
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