Radiative Symmetry Breaking of the Minimal Left-Right Symmetric Model
Abstract
Under the assumption of classical conformal invariance, we study the Coleman-Weinberg symmetry breaking mechanism in the minimal left-right symmetric model. This model is attractive as it provides a natural framework for small neutrino masses and the restoration of parity as a good symmetry of nature. We find that, in a large fraction of the parameter space, the parity symmetry is maximally broken by quantum corrections in the Coleman-Weinberg potential, which are a consequence of the conformal anomaly. As the left-right symmetry breaking scale is connected to the Planck scale through the logarithmic running of the dimensionless couplings of the scalar potential, a large separation of the two scales can be dynamically generated. The symmetry breaking dynamics of the model was studied using a renormalization group analysis. Electroweak symmetry breaking is triggered by the breakdown of left-right symmetry, and the left-right breaking scale is therefore expected in the few TeV range. The phenomenological implications of the symmetry breaking mechanism are discussed.
Keywords
Cite
@article{arxiv.0911.0710,
title = {Radiative Symmetry Breaking of the Minimal Left-Right Symmetric Model},
author = {Martin Holthausen and Manfred Lindner and Michael A. Schmidt},
journal= {arXiv preprint arXiv:0911.0710},
year = {2010}
}
Comments
23 pages, 1 figure; version as published in journal; title changed, changes in abstract, introduction and conclusions