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Chang, Chao-Hsi; Li, Tong; Li, Xue-Qian; Wang, Yu-Ming; Chang, CH , CCAST, World Lab, POB 8730, Beijing 100080, Peoples R China
Lifetime of doubly charmed baryons
KeywordOscillator Quark-model To-leading Order Weak Decays Inclusive Decays Mass Dependence Qcd Corrections Beauty Hadrons B-mesons Transitions Difference
Abstractn 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.
Subject AreaPhysics
Indexed BySCI
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Cited Times:18[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Corresponding AuthorChang, CH , CCAST, World Lab, POB 8730, Beijing 100080, Peoples R China
Recommended Citation
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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