Built on

J. S. Lee, A. Pilaftsis, M. S. Carena, S. Y. Choi, M. Drees, J. R. Ellis and C. E. M. Wagner, “CPsuperH: A Computational tool for Higgs phenomenology in the minimal supersymmetric standard model with explicit CP violation,” Comput. Phys. Commun. 156
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T. Hur, D. W. Jung, P. Ko and J. Y. Lee, “Electroweak symmetry breaking and cold dark matter from strongly interacting hidden sector,” Phys. Lett. B 696
Original
2011
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T. Hur and P. Ko, “Scale invariant extension of the standard model with strongly interacting hidden sector,” Phys. Rev. Lett. 106
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2011
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G. Aad et al
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2012
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S. Chatrchyan et al
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2012
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S. Baek, P. Ko and W. I. Park, “Search for the Higgs portal to a singlet fermionic dark matter at the LHC,” JHEP 1202
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2012
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S. Baek, P. Ko, W. I. Park and E. Senaha, “Vacuum structure and stability of a singlet fermion dark matter model with a singlet scalar messenger,” JHEP 1211
Original
2012
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Y. Farzan and A. R. Akbarieh, JCAP 1210
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2013
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Similar

S. Choi, S. Jung and P. Ko, “Implications of LHC data on 125 GeV Higgs-like boson for the Standard Model and its various extensions,” JHEP 1310
Original
2013
Cited alongside, same era.
S. Baek, P. Ko, W. I. Park and E. Senaha, “Higgs Portal Vector Dark Matter : Revisited,” JHEP 1305
Original
2013
Cited alongside, same era.
S. Baek, P. Ko and W. I. Park, “Singlet Portal Extensions of the Standard Seesaw Models to a Dark Sector with Local Dark Symmetry,” JHEP 1307
Original
2013
Cited alongside, same era.
K. Cheung, J. S. Lee and P. Y. Tseng, “Higgs Precision (Higgcision) Era begins,” JHEP 1305
Original
2013
Cited alongside, same era.
T. Abe, N. Chen and H. J. He, “LHC Higgs Signatures from Extended Electroweak Gauge Symmetry,” JHEP 1301

Then

P. Ko, W. I. Park and Y. Tang, “Higgs portal vector dark matter for GeV \mathinner{\mathrm{GeV}} scale γ \gamma -ray excess from galactic center,” JCAP 1409
Original
2014
Later among the works it cites.
S. Baek, P. Ko, W. I. Park and Y. Tang, JCAP 1406
Original
2014
Later among the works it cites.
C. Boehm, M. J. Dolan and C. McCabe, “A weighty interpretation of the Galactic Centre excess,” Phys. Rev. D 90
Original
2014
Later among the works it cites.
K. Cheung, J. S. Lee and P. Y. Tseng, “Higgs precision analysis updates 2014,” Phys. Rev. D 90
Original
2014
Later among the works it cites.
S. Baek, P. Ko and W. I. Park, “Local Z 2 Z_{2} scalar dark matter model confronting galactic G e V {\mathrm{G}eV} -scale γ \gamma -ray,” Phys. Lett. B 747

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2015

Bounds on Higgs-Portal models from the LHC Higgs data

Cheung, Kingman, Ko, P., Lee, Jae Sik et al.

Understand

In a number of Higgs-portal models, an $SU(2)$ isospin-singlet scalar boson generically appears at the electroweak scale and can mix with the Standard Model (SM) Higgs boson with a mixing angle $\alpha$.

This singlet scalar boson can have renormalizable couplings to a pair of dark matter particles, vectorlike leptons or quarks, or new gauge bosons, thereby modifying the Higgs signal strengths in a nontrivial way.
In this work, we perform global fits to such models using the most updated LHC Higgs-boson data and discuss the corresponding implications on Higgs-portal-type models.
In particular we find that the current LHC Higgs-boson data slightly favors the SM over the Higgs-portal singlet-scalar models, which has to be further examined using the upcoming LHC Higgs-boson data.