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The European Physical Journal C

, Volume 51, Issue 3, pp 701–711 | Cite as

The Landau pole and Z decays in the 331 dilepton model

  • R. Martínez
  • F. OchoaEmail author
Regular Article - Theoretical Physics

Abstract

We calculate the decay widths and branching ratios of the extra neutral boson Z’ predicted by the 331 dilepton model in the framework of two different particle contents. These calculations are performed taking into account oblique radiative corrections and flavor changing neutral currents (FCNC) under the ansatz of Matsuda as a texture for the quark mass matrices. Contributions of the order of 10-1–10-2 are obtained in the branching ratios, and the partial widths about one order of magnitude bigger in relation with other 331 models are also obtained. A Landau-like pole arises at 3.5 TeV considering the full particle content of the minimal dilepton model (MDM), where the exotic sector is considered as a degenerate spectrum at the 3 TeV scale. The Landau pole problem can be avoided at the TeV scales if a new leptonic content running below the threshold at 3 TeV is implemented as suggested by other authors.

Keywords

Decay Width Particle Content Vacuum Expectation Value Landau Pole Flavor Change Neutral Current 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer-Verlag Berlin Heidelberg 2007

Authors and Affiliations

  1. 1.Departamento de FísicaUniversidad NacionalBogotáColombia

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