Higgsportal assisted Higgs inflation with a sizeable tensortoscalar ratio
Abstract
We show that the Higgs portal interactions involving extra dark Higgs field can save generically the original Higgs inflation of the standard model (SM) from the problem of a deep nonSM vacuum in the SM Higgs potential. Specifically, we show that such interactions disconnect the top quark pole mass from inflationary observables and allow multidimensional parameter space to save the Higgs inflation, thanks to the additional parameters (the dark Higgs boson mass m {sub φ}, the mixing angle α between the SM Higgs H and dark Higgs Φ, and the mixed quartic coupling) affecting RGrunning of the Higgs quartic coupling. The effect of Higgs portal interactions may lead to a larger tensortoscalar ratio, 0.08 ∼< r ∼< 0.1, by adjusting relevant parameters in wide ranges of α and m {sub φ}, some region of which can be probed at future colliders. Performing a numerical analysis we find an allowed region of parameters, matching the latest Planck data.
 Authors:
 Quantum Universe Center, Korea Institute for Advanced Study, 85 Hoegiro Dongdaemungu, Seoul 02455 (Korea, Republic of)
 Departament de Física Teòrica and IFIC, Universitat de ValènciaCSIC, E46100, Burjassot (Spain)
 Publication Date:
 OSTI Identifier:
 22680050
 Resource Type:
 Journal Article
 Resource Relation:
 Journal Name: Journal of Cosmology and Astroparticle Physics; Journal Volume: 2017; Journal Issue: 02; Other Information: Country of input: International Atomic Energy Agency (IAEA)
 Country of Publication:
 United States
 Language:
 English
 Subject:
 79 ASTROPHYSICS, COSMOLOGY AND ASTRONOMY; COUPLING; HIGGS BOSONS; HIGGS MODEL; INFLATIONARY UNIVERSE; INTERACTIONS; MASS; MIXING ANGLE; NUMERICAL ANALYSIS; SPACE; STANDARD MODEL; T QUARKS
Citation Formats
Kim, Jinsu, Ko, Pyungwon, and Park, WanIl, Email: kimjinsu@kias.re.kr, Email: pko@kias.re.kr, Email: Wanil.Park@uv.es. Higgsportal assisted Higgs inflation with a sizeable tensortoscalar ratio. United States: N. p., 2017.
Web. doi:10.1088/14757516/2017/02/003.
Kim, Jinsu, Ko, Pyungwon, & Park, WanIl, Email: kimjinsu@kias.re.kr, Email: pko@kias.re.kr, Email: Wanil.Park@uv.es. Higgsportal assisted Higgs inflation with a sizeable tensortoscalar ratio. United States. doi:10.1088/14757516/2017/02/003.
Kim, Jinsu, Ko, Pyungwon, and Park, WanIl, Email: kimjinsu@kias.re.kr, Email: pko@kias.re.kr, Email: Wanil.Park@uv.es. Wed .
"Higgsportal assisted Higgs inflation with a sizeable tensortoscalar ratio". United States.
doi:10.1088/14757516/2017/02/003.
@article{osti_22680050,
title = {Higgsportal assisted Higgs inflation with a sizeable tensortoscalar ratio},
author = {Kim, Jinsu and Ko, Pyungwon and Park, WanIl, Email: kimjinsu@kias.re.kr, Email: pko@kias.re.kr, Email: Wanil.Park@uv.es},
abstractNote = {We show that the Higgs portal interactions involving extra dark Higgs field can save generically the original Higgs inflation of the standard model (SM) from the problem of a deep nonSM vacuum in the SM Higgs potential. Specifically, we show that such interactions disconnect the top quark pole mass from inflationary observables and allow multidimensional parameter space to save the Higgs inflation, thanks to the additional parameters (the dark Higgs boson mass m {sub φ}, the mixing angle α between the SM Higgs H and dark Higgs Φ, and the mixed quartic coupling) affecting RGrunning of the Higgs quartic coupling. The effect of Higgs portal interactions may lead to a larger tensortoscalar ratio, 0.08 ∼< r ∼< 0.1, by adjusting relevant parameters in wide ranges of α and m {sub φ}, some region of which can be probed at future colliders. Performing a numerical analysis we find an allowed region of parameters, matching the latest Planck data.},
doi = {10.1088/14757516/2017/02/003},
journal = {Journal of Cosmology and Astroparticle Physics},
number = 02,
volume = 2017,
place = {United States},
year = {Wed Feb 01 00:00:00 EST 2017},
month = {Wed Feb 01 00:00:00 EST 2017}
}

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