Abstract
We consider an extension of the Standard Model in which the symmetry is enlarged by a global flavour factor A 4 and the scalar sector accounts for three copies of the Standard Model Higgs, transforming as a triplet of A 4. In this context, we study the most general scalar potential and its minima, performing for each of them a model independent analysis on the related phenomenology. We study the scalar spectrum, the new contributions to the oblique corrections, the decays of the Z and W ±, the new sources of CP and flavour violation, which all are affected by the introduction of multiple Higgses transforming under A 4. We find that this model independent approach discriminates the different minima allowed by the scalar potential.
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ArXiv ePrint: 1012.1791
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de Adelhart Toorop, R., Bazzocchi, F., Merlo, L. et al. Constraining flavour symmetries at the EW scale I: the A 4 Higgs potential. J. High Energ. Phys. 2011, 35 (2011). https://doi.org/10.1007/JHEP03(2011)035
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DOI: https://doi.org/10.1007/JHEP03(2011)035