Lepton Flavor Violating Z→l<SUB>i</SUB>l<SUB>j</SUB>in Flavor-Universal Topcolor-Assisted Technicolor Models

YUE Chong-Xing; ZHAO Ye; LI Hong; ZHAO Qi

Chinese Physics C> 2003, Vol. 27> Issue(12) : 1070-1073

Lepton Flavor Violating Z→l_il_jin Flavor-Universal Topcolor-Assisted Technicolor Models

Physics Department of Liaoning Normal University,Dalian 116029,China2 College of Physics and Information Engineering,Henan Normal University,Xinxiang 453002,China3 Pingdingshan Radio and TV University,Pingdingshan 467000,China

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Abstract：
In the context of flavor-universal topcolor-assisted technicolor (TC2) models, we study the lepton flavor violating (LFV) processes Z→l_il_j. We find that the extra U(1) gauge boson Z′ can give significantly contributions to these LFV processes. With reasonable values of the parameters, the branching ratios of the processes Z→τμ and Z→τe can approach the experimental upper limits. The indirect bound on the process Z→μe can give a severe constraint on the flavor-universal TC2 models.

References

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YUE Chong-Xing, ZHAO Ye, LI Hong and ZHAO Qi. Lepton Flavor Violating Z→l_il_jin Flavor-Universal Topcolor-Assisted Technicolor Models[J]. Chinese Physics C, 2003, 27(12): 1070-1073.

YUE Chong-Xing, ZHAO Ye, LI Hong and ZHAO Qi. Lepton Flavor Violating Z→l_il_jin Flavor-Universal Topcolor-Assisted Technicolor Models[J]. Chinese Physics C, 2003, 27(12): 1070-1073. shu

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Received: 2003-02-14
Revised: 1900-01-01

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沈阳化工大学材料科学与工程学院沈阳 110142

Lepton Flavor Violating Z→l_il_jin Flavor-Universal Topcolor-Assisted Technicolor Models

Corresponding author: YUE Chong-Xing,

Physics Department of Liaoning Normal University,Dalian 116029,China2 College of Physics and Information Engineering,Henan Normal University,Xinxiang 453002,China3 Pingdingshan Radio and TV University,Pingdingshan 467000,China

Received Date: 2003-02-14

Accepted Date: 1900-01-01

Available Online: 2003-12-05

Abstract: In the context of flavor-universal topcolor-assisted technicolor (TC2) models, we study the lepton flavor violating (LFV) processes Z→l_il_j. We find that the extra U(1) gauge boson Z′ can give significantly contributions to these LFV processes. With reasonable values of the parameters, the branching ratios of the processes Z→τμ and Z→τe can approach the experimental upper limits. The indirect bound on the process Z→μe can give a severe constraint on the flavor-universal TC2 models.

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Lepton Flavor Violating Z→l_il_jin Flavor-Universal Topcolor-Assisted Technicolor Models

Lepton Flavor Violating Z→l_il_jin Flavor-Universal Topcolor-Assisted Technicolor Models