Lifetime of doubly charmed baryons

	Lifetime of doubly charmed baryons
	Chang, CH; Li, T; Li, XQ; Wang, YM; Wang YM(王玉明)
刊名	COMMUNICATIONS IN THEORETICAL PHYSICS
	2008
卷号	49 期号:4 页码:993-1000
关键词	doubly charmed baryons harmonic oscillator model
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
英文摘要	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.
学科主题	Physics
类目[WOS]	Physics, Multidisciplinary
研究领域[WOS]	Physics
原文出处	SCI
语种	英语
WOS记录号	WOS:000255100900038
内容类型	期刊论文
源URL	[http://ir.ihep.ac.cn/handle/311005/238857]
专题	高能物理研究所_理论物理室高能物理研究所_粒子天体物理中心高能物理研究所_计算中心
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	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.