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A Simple Charged Higgs Model of Soft CP Violation without Flavor Changing Neutral Currents

High Energy Physics - Phenomenology 2008-12-25 v2 High Energy Physics - Experiment

Abstract

We propose a model of soft CP violation in which the CP violating mechanism naturally lies only in the charged Higgs sector. The charged Higgs mechanism not only accounts for the measured value of the CP-violating parameter ϵ\epsilon but also accommodates the current limits on ϵ/ϵ\epsilon'/\epsilon. Our model naturally prevents tree-level Flavor-Changing Neutral Currents (FCNCs) of any kind. Unlike the Weinberg-Branco Three-Higgs Doublet Model, the deviation from the Standard Model rate for bsγb\to s\gamma is small. Furthermore, leading contributions to the electron (neutron) electric dipole moment are non-zero beginning at the three (two) loop level. Surprisingly similar to the Standard Kobayashi-Maskawa Model, our model is of milliweak character but with seemingly superweak phenomenology.

Keywords

Cite

@article{arxiv.hep-ph/9803273,
  title  = {A Simple Charged Higgs Model of Soft CP Violation without Flavor Changing Neutral Currents},
  author = {David Bowser-Chao and Darwin Chang and Wai-Yee Keung},
  journal= {arXiv preprint arXiv:hep-ph/9803273},
  year   = {2008}
}

Comments

12 pages latex, 1 figure, complete postscript on my "work" page at http://hepster.phy.uic.edu/~davechao/work/default.html . Revised version includes expanded acknowlegements, and fix of typos in b--> s gamma formula