The 2HDM-X and Large Hadron Collider Data

Abstract

We study the consistency of two Higgs doublet models in light of the new bosonic particle discovery at the LHC. We work within a general setup that we call the 2HDM-X, in which the quarks couple to both scalar doublets with aligned couplings such that flavor-changing neutral currents are absent at tree level. The 2HDM-X encompasses the traditional Type I, Type II, lepton specific, and flipped models, but also provides for more general possibilities. The best fit to the current data with a suppressed tau tau signal and a b bbar signal of Standard Model strength is given by the 2HDM-X with specific parameter choices; however, very good fits are also obtained within the lepton-specific model and a democratic model, the 2HDM-D, in which both the up-type and down-type quarks couple to each doublet with equal strengths. The approach provides a general framework in which to interpret future LHC Higgs data within extensions of the Standard Model with two Higgs doublets.

5 pages, 4 figures

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• Revisiting Generalized Two Higgs Doublet Model in the Light of Muon Anomaly and Lepton Flavor Violating Decays at HL-LHC
• LHC Constraints on the Lee-Wick Higgs Sector
• Collider Bounds on 2-Higgs Doublet Models with $U(1{)}_X$ Gauge Symmetries
• LHC bounds on coloured scalars
• Type I + II Seesaw in a Two Higgs Doublet Model
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• Phenomenology of the new physics coming from 2HDMs to the neutrino magnetic dipole moment