Two Higgs doublet models augmented by a scalar color octet

Abstract

The LHC is now studying in detail the couplings of the Higgs boson in order to determine if there is new physics. Many recent studies have examined the available fits to Higgs couplings from the perspective of constraining two Higgs doublet models (2HDM). In this paper we extend those studies to include constraints on the one loop couplings of the Higgs to gluons and photons. These couplings are particularly sensitive to the existence of new colored particles that are hard to detect otherwise and we use them to constrain a 2HDM augmented with a color-octet scalar, a possibility motivated by minimal flavor violation. We first study theoretical constraints on this model and then compare them with LHC measurements.

23 pages, 10 figures; Matched the publication version

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Cited by in corpus (12)

• LHC constraints on color octet scalars
• LHC bounds on coloured scalars
• New theoretical constraints on scalar color octet models
• Top and bottom tensor couplings from a color octet scalar
• NLO Perturbativity Bounds on Quartic Couplings in Renormalizable Theories with ${\varphi }^4$-like Scalar Sectors
• Vacuum Stability and Perturbativity of SU(3) Scalars
• Color-octet scalar decays to a gluon and an electroweak gauge boson in the Manohar-Wise model
• Constraints on coloured scalars from global fits
• Electric dipole moments from colour-octet scalars
• Validity of two Higgs doublet models with a scalar color octet up to a high energy scale
• Fingerprinting the contribution of colored scalars to the $H^{+}{W}^{-}Z(\gamma )$ vertex
• Boosting Beyond: A Novel Approach to Probing Top-Philic Resonances at the LHC