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Hierarchical vs Degenerate 2HDM: The LHC Run 1 Legacy at the Onset of Run 2

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arxiv 1601.04545 v1 pith:L4G4S5JM submitted 2016-01-18 hep-ph

G. C. Dorsch , S. J. Huber , K. Mimasu , J. M. No This is my paper · ORCID
classification hep-ph
keywords spectrumnon-degeneratescalarsallowedasymmetrychangecommonlyconsidered
verification ladder T0 review T1 audit T2 compute T3 formal
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Current discussions of the allowed two-Higgs-doublet model (2HDM) parameter space after LHC Run 1 and the prospects for Run 2 are commonly phrased in the context of a quasi-degenerate spectrum for the new scalars. Here we discuss the generic situation of a 2HDM with a non-degenerate spectrum for the new scalars. This is highly motivated from a cosmological perspective since it naturally leads to a strongly first order electroweak phase transition that could explain the matter-antimatter asymmetry in the Universe. While constraints from measurements of Higgs signal strengths do not change, those from searches of new scalar states get modified dramatically once a non-degenerate spectrum is considered.

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Cited by 2 Pith papers

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score. Full citation record

  1. New Sensitivity Curves for Gravitational-Wave Signals from Cosmological Phase Transitions

    hep-ph 2020-02 unverdicted novelty 7.0 of 10

    Defines peak-integrated sensitivity curves (PISCs) that fold in the expected spectral shape of gravitational waves from cosmological phase transitions and supplies semianalytical fits plus public data for major detectors.

  2. Top-quark spin correlations as a tool to distinguish pseudoscalar $A \to ZH$ and scalar $H \to ZA$ signatures in $Z t \bar t$ final states at the LHC

    hep-ph 2025-02 conditional novelty 5.0 of 10

    Angular variables built from lepton directions in fully leptonic ttbar decays can distinguish A to Z H from H to Z A cascades in Z ttbar final states at the HL-LHC, reaching 6.4 to 6.5 sigma for 600/800 GeV 2HDM benchmarks.

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