Muon Decay to One Loop Order in the Left-Right Symmetric Model

Abstract

One loop corrections to the muon decay are studied in a popular and self-consistent version of the Left-Right symmetric model. It is shown quantitatively, that the corrections do not split into those that come from the Standard Model sector and some decoupling terms. For a heavy Spontaneous Symmetry Breaking (SSB) scale of the order of a least 1 TeV, the contributions from the top quark have a logarithmic behaviour and there is a strong quadratic dependence on the heavy Higgs scalar masses. The dependence on the light Higgs boson mass is small. The heavy neutrinos are shown to play an important role, although secondary in comparison with the heavy scalar particles as long as the heavy neutrinos' Majorana Yukawa coupling matrix $h_M$ obeys unitarity bounds.

20 pages, 7 figures

References in corpus (3)

• Ubiquitous CP violation in a top-inspired left-right model
• On Teraelectronvolt Majorana Neutrinos
• The Effective Fine Structure Constant at TESLA Energies

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• Discriminating the HTM and MLRSM models in collider studies via doubly charged Higgs boson pair production and the subsequent leptonic decays
• Implications of Unitarity and Charge Breaking Minima in Left-Right Symmetric Model
• Electroweak Gauge Theories and Alternative Theories at a Future Linear e+e- Collider
• The Minimal Left-Right Symmetric Model and Radiative Corrections to the Muon Decay