Physical parameters and basis transformations in the Two-Higgs-Doublet model

Details Physical parameters and basis transformations in the Two-Higgs-Doublet model Physical parameters and basis transformations in the Two-Higgs-Doublet model

2007-12-27

arxiv.org/abs/0712.4260v2

Phys.Rev.D77:055009,2008

Physics

High Energy Physics

High Energy Physics - Phenomenology

11 pages. 1 figure. v2: references and comments added

Scientific paper

10.1103/PhysRevD.77.055009

A direct connection between physical parameters of general Two-Higgs-Doublet Model (2HDM) potentials after electroweak symmetry breaking (EWSB) and the parameters that define the potentials before EWSB is established. These physical parameters, such as the mass matrix of the neutral Higgs bosons, have well defined transformation properties under basis transformations transposed to the fields after EWSB. The relations are also explicitly written in a basis covariant form. Violation of these relations may indicate models beyond 2HDMs. In certain cases the whole potential can be defined in terms of the physical parameters. The distinction between basis transformations and reparametrizations is pointed out. Some physical implications are discussed.

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