Neutral top-pion and the Lepton Flavor Violating Processes

  • In the context of topcolor-assisted techicolor (TC2)model, we study the contributions of the neutral top-pion π0t to the lepton flavor violation (LFV) processes li→ljγ,li→ljlkll and t→clilj respectively. We find that the present experimental upper bound for μ→eγ gives severe constraints on the free parameters of the TC2 model. Under these constraints,we consider the processes li→ljlkll and t→c lilj generated by π0t exchange at the tree-level and the one loop level. Our numerical results show that the neutral top-pion π0t can enhance the branching ratios of these processes by several orders of magnitude. Some of those processes might be used to detect the possible signals of π0t in the futrue high energy experiment.
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YUE Cong-Xing and YU Dong-Qi. Neutral top-pion and the Lepton Flavor Violating Processes[J]. Chinese Physics C, 2005, 29(11): 1027-1032.
YUE Cong-Xing and YU Dong-Qi. Neutral top-pion and the Lepton Flavor Violating Processes[J]. Chinese Physics C, 2005, 29(11): 1027-1032. shu
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Received: 2005-02-21
Revised: 1900-01-01
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Neutral top-pion and the Lepton Flavor Violating Processes

    Corresponding author: YUE Cong-Xing,
  • Department of Physics, Liaoning Normal University, Dalian 116029,China

Abstract: In the context of topcolor-assisted techicolor (TC2)model, we study the contributions of the neutral top-pion π0t to the lepton flavor violation (LFV) processes li→ljγ,li→ljlkll and t→clilj respectively. We find that the present experimental upper bound for μ→eγ gives severe constraints on the free parameters of the TC2 model. Under these constraints,we consider the processes li→ljlkll and t→c lilj generated by π0t exchange at the tree-level and the one loop level. Our numerical results show that the neutral top-pion π0t can enhance the branching ratios of these processes by several orders of magnitude. Some of those processes might be used to detect the possible signals of π0t in the futrue high energy experiment.

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