Minimal scenario of Criticality for Electroweak scale, Neutrino Masses, Dark Matter, and Inflation
Digital data available（大阪大学学術情報庫 桜華）
Begin reading now
学術機関リポジトリデータベース（IRDB）（機関リポジトリ）
Search by Bookstore
Holdings of Libraries in Japan
This page shows libraries in Japan other than the National Diet Library that hold the material.
Please contact your local library for information on how to use materials or whether it is possible to request materials from the holding libraries.
other
OUKA (Osaka University Knowledge Archive)
DigitalYou can check the holdings of institutions and databases with which Institutional Repositories DataBase(IRDB)(Institutional Repository) is linked at the site of Institutional Repositories DataBase(IRDB)(Institutional Repository).
Search by Bookstore
Bibliographic Record
You can check the details of this material, its authority (keywords that refer to materials on the same subject, author's name, etc.), etc.
- Material Type
- 文書・図像類
- Title
- Author/Editor
- Hamada, YutaKawai, HikaruKawana, KiyoharuOda, KinyaYagyu, Kei
- Author Heading
- Publication Date
- 2021-02-09
- Publication Date (W3CDTF)
- 2021-02-09
- Text Language Code
- eng
- Target Audience
- 一般
- Note (General)
- Yuta Hamada, Hikaru Kawai, Kiyoharu Kawana, Kin-ya Oda, Kei Yagyu. Minimal scenario of Criticality for Electroweak scale, Neutrino Masses, Dark Matter, and Inflation. https://arxiv.org/abs/2102.04617.We propose a minimal model that can explain the electroweak scale, neutrino masses, Dark Matter (DM), and successful inflation all at once based on the multicritical-point principle (MPP). The model has two singlet scalar fields that realize an analogue of the Coleman-Weinberg mechanism, in addition to the Standard Model with heavy Majorana right-handed neutrinos. By assuming a Z₂ symmetry, one of the scalars becomes a DM candidate whose property is almost the same as the minimal Higgs-portal scalar DM. In this model, the MPP can naturally realize a saddle point in the Higgs potential at high energy scales. By the renormalization-group analysis, we study the critical Higgs inflation with non-minimal coupling ξ|H|²R that utilizes the saddle point of the Higgs potential. We find that it is possible to realize successful inflation even for ξ=25 and that the heaviest right-handed neutrino is predicted to have a mass around 10¹⁴ GeV to meet the current cosmological observations. Such a small value of ξ can be realized by the Higgs-portal coupling λSH≃0.32 and the vacuum expectation value of the additional neutral scalar ⟨ϕ⟩≃2.7 TeV, which correspond to the dark matter mass 2.0 TeV, its spin-independent cross section 1.8×10⁻⁹ pb, and the mass of additional neutral scalar 190 GeV.
- Format (IMT)
- application/pdf