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Lifetime of doubly charmed baryons
Chang, Chao-Hsi; Li, Tong; Li, Xue-Qian; Wang, Yu-Ming; Chang, CH , CCAST, World Lab, POB 8730, Beijing 100080, Peoples R China
2008
发表期刊COMMUNICATIONS IN THEORETICAL PHYSICS
ISSN0253-6102
卷号49期号:4页码:993-1000
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.
部门归属[Chang, CH] CCAST, World Lab, Beijing 100080, Peoples R China; [Chang, CH] Acad Sinica, Inst Theoret Phys, Beijing 100080, Peoples R China; [Li, T; Li, XQ] Nankai Univ, Dept Phys, Tianjin 300071, Peoples R China; [Wang, YM] Chinese Acad Sci, Inst High Energy Phys, Beijing 100049, Peoples R China
关键词Oscillator Quark-model To-leading Order Weak Decays Inclusive Decays Mass Dependence Qcd Corrections Beauty Hadrons B-mesons Transitions Difference
学科领域Physics
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收录类别SCI
WOS记录号WOS:000255100900038
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被引频次:17[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.itp.ac.cn/handle/311006/5550
专题理论物理所1978-2010年知识产出
通讯作者Chang, CH , CCAST, World Lab, POB 8730, Beijing 100080, Peoples R China
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GB/T 7714
Chang, Chao-Hsi,Li, Tong,Li, Xue-Qian,et al. Lifetime of doubly charmed baryons[J]. COMMUNICATIONS IN THEORETICAL PHYSICS,2008,49(4):993-1000.
APA Chang, Chao-Hsi,Li, Tong,Li, Xue-Qian,Wang, Yu-Ming,&Chang, CH , CCAST, World Lab, POB 8730, Beijing 100080, Peoples R China.(2008).Lifetime of doubly charmed baryons.COMMUNICATIONS IN THEORETICAL PHYSICS,49(4),993-1000.
MLA Chang, Chao-Hsi,et al."Lifetime of doubly charmed baryons".COMMUNICATIONS IN THEORETICAL PHYSICS 49.4(2008):993-1000.
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