Z′and Lepton Flavor-Violation Tau Decays

YUE Chong-Xing; ZHANG Yan-Ming; LIU Lan-Jun

Chinese Physics C> 2003, Vol. 27> Issue(7) : 564-566

Z′and Lepton Flavor-Violation Tau Decays

Department of Physics,Liaoning Normal University,Dalian 116029,China2 College of Physics and Information Engineering,He′nan Normal University,Xinxiang 453002,China

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Abstract：
There are many models beyond the standard model predicting the existence of non-universal gauge bosons Z′,which can give rise to very rich phenomena. We calculate the contributions of the non-universal gauge bosons Z′,predicted by topcolor-assisted technicolor (TC2) models and flavor-universal TC2 models,to the lepton flavor-violation tau decays τ →l iγ and τ →l il jl k. We find that the branching ratio Br(τ →l il jl k) is larger than that of the process τ →l iγ in all of the parameter space. Over a sizable region of the parameter space,we have Br(τ →l il jl k)～10^－8,which may be tested in the future experiments.

References

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YUE Chong-Xing, ZHANG Yan-Ming and LIU Lan-Jun. Z′and Lepton Flavor-Violation Tau Decays[J]. Chinese Physics C, 2003, 27(7): 564-566.

YUE Chong-Xing, ZHANG Yan-Ming and LIU Lan-Jun. Z′and Lepton Flavor-Violation Tau Decays[J]. Chinese Physics C, 2003, 27(7): 564-566. shu

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Received: 2002-12-05
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

Z′and Lepton Flavor-Violation Tau Decays

Corresponding author: YUE Chong-Xing,

Department of Physics,Liaoning Normal University,Dalian 116029,China2 College of Physics and Information Engineering,He′nan Normal University,Xinxiang 453002,China

Received Date: 2002-12-05
Accepted Date: 1900-01-01
Available Online: 2003-07-05

Abstract: There are many models beyond the standard model predicting the existence of non-universal gauge bosons Z′,which can give rise to very rich phenomena. We calculate the contributions of the non-universal gauge bosons Z′,predicted by topcolor-assisted technicolor (TC2) models and flavor-universal TC2 models,to the lepton flavor-violation tau decays τ →l iγ and τ →l il jl k. We find that the branching ratio Br(τ →l il jl k) is larger than that of the process τ →l iγ in all of the parameter space. Over a sizable region of the parameter space,we have Br(τ →l il jl k)～10^－8,which may be tested in the future experiments.