Reparameterization of the scalar potential in the two Higgs doublet model
Departamento de Física, Universidad Nacional de Colombia, Bogotá, Colombia
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Revised: 27 April 2006
Published online: 7 July 2006
In the two Higgs doublet model with no additional symmetries in the scalar sector (different from the gauge and Lorentz symmetries), it is customary to reparameterize the model by rotating the scalar doublets so that one of the vacuum expectation values vanishes. It is well known that the Yukawa sector of the model is unaffected by such a transformation. Notwithstanding this, since the Higgs potential must also be transformed, it is necessary to show that such a sector is also unaltered in its physical content. We demonstrate that the physical content of the potential is invariant even when the charge conjugation symmetry is demanded.
© Springer-Verlag, 2006