Light scalar dark matter extension of the type-II two-Higgs-doublet model

2018/01/25 by Xiao-Fang Han, Lei Wang, Rongle Shi +1
Physics and Astronomy · #Cosmology and Gravitation Theories #Dark Matter and Cosmic Phenomena #Dark matter #Higgs boson #Higgs sector #Large Hadron Collider #Nuclear physics #Particle physics #Particle physics theoretical and experimental studies #Physics #Scalar (mathematics) #Two-Higgs-doublet model #hep-ph

paper · pdf · doi:10.1103/physrevd.98.035024

published as Phys. Rev. D 98, 035024 (2018) · 20 pages, 6 figures, 2 tables

arxiv created 2018/01/25 · openalex created_date 2018/02/02 · openalex publication_date 2018/08/16 · arxiv updated 2018/08/22 · openalex updated_date 2026/08/05

Abstract

We examine the type-II two-Higgs-doublet model with a light scalar dark matter (S) after imposing the constraints from the Higgs searches at the LHC and dark matter experiments. We first assume that both CP-even Higgses (h and H) are portals between the dark matter and standard model (SM) sectors, and the CP-odd Higgs (A) and H are heavier than 130 GeV. We find that the dark matter with a mass of 10--50 GeV is disfavored by the joint constraints of the 125 GeV Higgs signal data, the relic density, XENON1T (2018), and Fermi-LAT. Next, we consider a special scenario in which the heavy CP-even Higgs is taken as the 125 GeV Higgs. The light CP-even Higgs is the only portal between the dark matter and SM sectors, and the dark matter mass is slightly below the Higgs resonance. We find that the signal data of the 125 GeV Higgs restrict tan\ensuremathβ to be in the range of 1--1.5 for m_h<62 GeV. The gg\ensuremath→A\ensuremath→hZ and bb\ensuremath→h\ensuremath→\ensuremathτ⁺\ensuremathτ^\ensuremath- channels at the LHC can impose lower limits and upper limits on tan\ensuremathβ, respectively. For appropriate values of tan\ensuremathβ, \ensuremathλ_h, and m_h, the dark matter with a mass of 10--50 GeV is allowed by the constraints of the Higgs searches at the LHC and dark matter experiments. For example, tan\ensuremathβ is restricted to be in the range of 1.0--1.5 for 10 GeV<m_s<28 GeV, and \fracm_h2m_S>1.12 is excluded for 30 GeV<m_S<50 GeV.

Citations

• Search for a CP-odd Higgs boson decaying to Zh in pp collisions at s=8 TeV with the ATLAS detector
• Radiative corrections to theZbb¯vertex and constraints on extended Higgs sectors
• Precision Electroweak Measurements on the Z Resonance
• FeynRules 2.0 — A complete toolbox for tree-level phenomenology
• Status of the charged Higgs boson in two Higgs doublet models
• Searches for heavy ZZ and ZW resonances in the ℓℓqq and ννqq final states in pp collisions at √(s)=13 TeV with the ATLAS detector
• Search for heavy resonances decaying into WW in the eν μ ν e ν μ ν final state in pp collisions at √(s)=13 s = 13 \text TeV TeV with the ATLAS detector
• Big-Bang Nucleosynthesis