Neutral top pion and the rare top decayst→clilj
نویسندگان
چکیده
منابع مشابه
Detecting the neutral top-pion at future muon colliders
The signals of the neutral top-pion π t at the first muon collider (FMC) are discussed by calculating its contributions to the processes μ+μ− −→ bb̄ and μ+μ− −→ t̄c. We find that the contributions to the process μ+μ− −→ bb̄ are very small and the ratio of signal over square root of the background (S/ √ B) is smaller than 0.2. However, in most of the parameter space, the π t can generate 36 and up ...
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In the context of topcolor-assisted techicolor(TC2) models, we study the contributions of the neutral top-pion π t to the lepton flavor violating(LFV) processes li → ljγ and li → lj lkll. We find that the present experimental bound on μ → eγ gives severe constraints on the free parameters of TC2 models. Taking into account these constraints, we consider the processes li → lj lkll generated by t...
متن کاملar X iv : h ep - p h / 04 09 04 7 v 1 5 S ep 2 00 4 Neutral top - pion and the rare top decays
We study the rare top decays t → clilj(l = τ, μ, or e) in the framework of topcolor-assisted technicolor(TC2) models. We find that the neutral top-pion π t can produce significant contributions to these processes via the flavor changing couplings π t t̄c and π 0 t lilj . For the π 0 t mass mπt = 150GeV and the parameter ε = 0.08, the branching ratio Br(t→ cττ) can reach 7.1×10−7. Taking into acc...
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Taking into account the constraints of the present experimental limit of the process μ → eγ on the free parameters of topcolor-assisted technicolor(TC2) models, we calculate the contributions of the neutral top-pion to the lepton flavor violating(LFV) Z decays Z → lilj. Our results show that the value of the branching ratio Br(Z → τ l) is larger than that of Br(Z → μe) in all of the parameter s...
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ژورنال
عنوان ژورنال: Physical Review D
سال: 2004
ISSN: 1550-7998,1550-2368
DOI: 10.1103/physrevd.70.054011