Lepton Flavor Violating Processes li→ljνll in Topcolor-AssistedTechnicolor Models

LIU Lan-Jun; YUE Chong-Xing

Chinese Physics C> 2004, Vol. 28> Issue(5) : 475-478

Lepton Flavor Violating Processes l_i→l_jν_ll in Topcolor-AssistedTechnicolor Models

LIU Lan-Jun ,
YUE Chong-Xing ^,

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

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Abstract：
We study the lepton flavor violating (LFV) processes l-i→l-jν-l-l in the context of the topcolor-assisted technicolor (TC2) models. We find that the branching ratios Br(τ→l-jν-τ-τ) are larger than the branching ratios Br(τ→l-jν-l-l) in all of the parameter space. Over a wide range of parameter space, we have Br(τ→l-jν-τ-τ)～10-6 and Br(τ→l-jν-l-l)～10-9(l=μ or e). Taking into account the bounds given by the experimental upper limit Brexp(μ→3e)≤1×10-12 on the free parameters of TC2 models, we further give the upper limits of the LFV processes l-i→l-jν-l-l. We hope that the results may be useful to partly explain the data of the neutrino oscillations and the future neutrino experimental data might be used to test TC2 models.

References

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. Super Kamiokande Collaboratino, Shiozawa M. talk at the Int . Conf . onNeut rion Physis and Astrophysis "Neut rino" 02( , May 25-30, 2002,Munich, Germany2. Rador T. Phys. Rev. , 1999, D60: 095012; YUE Chong Xing, LIU Guo Li, LI Jian Tao. Phys. Lett . , 2000, B496: 89; YUE Chong Xing,ZHANG Yan Ming, LIU Lan Jun. Phys. Lett. , 2002, B547: 252; YUE Chong Xing, XU Qing Jun, LIU Guo Li. Commun. Theor. Phys. 2002, 38: 4613. YUE Chong Xing et al. Phys. Lett. , 2002, B536: 674. Hill C T. Phys. Lett. , 1995, B345: 483; Lane K, Eichten E. Phys.Lett . , 1995, B352: 383; Lane K. Phys. Lett. , 1998, B433: 96; Cvetic G. Rev. Mod. Phys. , 1999, 71: 5135. Buchalla G et al. Phys. Rev. , 1996, D53: 5185; Hill C T, Simmons E H. hep- ph/02030796. Groom D E et al ( Part icle Dat a Group) .Eur. Phys. J. C. , 2001, 15: 17. Popovic M B, Simmons E H. Phys. Rev. , 1998, D58: 095007; Burdman G, Evans N. Phys. Rev. , 1999, D59: 1150058. Chivukula R S, Simmons E H. Phys. Rev. , 2002, D66: 0150069. Brooks M L et al ( MEGA Collaboration) . Phys. Rev. Lett. , 1999, 83:1521

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LIU Lan-Jun and YUE Chong-Xing. Lepton Flavor Violating Processes l_i→l_jν_ll in Topcolor-AssistedTechnicolor Models[J]. Chinese Physics C, 2004, 28(5): 475-478.

LIU Lan-Jun and YUE Chong-Xing. Lepton Flavor Violating Processes l_i→l_jν_ll in Topcolor-AssistedTechnicolor Models[J]. Chinese Physics C, 2004, 28(5): 475-478. shu

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Received: 2003-09-01
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 Processes l_i→l_jν_ll in Topcolor-AssistedTechnicolor Models

LIU Lan-Jun
YUE Chong-Xing ^,

Corresponding author: YUE Chong-Xing,

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

Received Date: 2003-09-01
Accepted Date: 1900-01-01
Available Online: 2004-05-05

Abstract: We study the lepton flavor violating (LFV) processes l-i→l-jν-l-l in the context of the topcolor-assisted technicolor (TC2) models. We find that the branching ratios Br(τ→l-jν-τ-τ) are larger than the branching ratios Br(τ→l-jν-l-l) in all of the parameter space. Over a wide range of parameter space, we have Br(τ→l-jν-τ-τ)～10-6 and Br(τ→l-jν-l-l)～10-9(l=μ or e). Taking into account the bounds given by the experimental upper limit Brexp(μ→3e)≤1×10-12 on the free parameters of TC2 models, we further give the upper limits of the LFV processes l-i→l-jν-l-l. We hope that the results may be useful to partly explain the data of the neutrino oscillations and the future neutrino experimental data might be used to test TC2 models.