Unconventional phenomenology of a minimal two-Higgs-doublet model

Details Unconventional phenomenology of a minimal two-Higgs-doublet model Unconventional phenomenology of a minimal two-Higgs-doublet model

2009-04-06

arxiv.org/abs/0904.0705v2

JHEP 0908:042,2009

Physics

High Energy Physics

High Energy Physics - Phenomenology

37 pages, 20 figures

Scientific paper

10.1088/1126-6708/2009/08/042

Two-Higgs-doublet models (2HDM) are simple extensions of the Standard Model (SM) where the scalar sector is enlarged by adding a weak doublet. As a result, the Higgs potential depends in general on several free parameters which have to be carefully chosen to give predictions consistent with the current precision data. We consider a 2HDM invariant under a twisted custodial symmetry and depending only on three extra parameters beyond the SM ones. This model naturally features an inverted mass spectrum with a light pseudoscalar state and a heavy SM-like Higgs boson. We thoroughly analyze direct and indirect constraints and present a few unconventional though promising signatures at the LHC.

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