Inflection-point inflation in a hyper-charge oriented model
Abstract
Inflection-point inflation is an interesting possibility to realize a successful slow-roll inflation when inflation is driven by a single scalar field with its value during inflation below the Planck mass (ΦI≲MPl). In order for a renormalization group (RG) improved effective λΦ4 potential to develop an inflection-point, the running quartic coupling λ(Φ) must exhibit a minimum with an almost vanishing value in its RG evolution, namely λ(ΦI)≃0 and βλ(ΦI)≃0, where βλ is the beta-function of the quartic coupling. Here in this paper, we consider the inflection-point inflation in the context of the minimal gauged U(1)X extended Standard Model (SM), which is a generalization of the minimal U(1)B$$-$$L model, and is constructed as a linear combination of the SM U(1)Y and U(1)B$$-$$L gauge symmetries. We identify the U(1)X Higgs field with the inflaton field. For a successful inflection-point inflation to be consistent with the current cosmological observations, the mass ratios among the U(1)X gauge boson, the right-handed neutrinos and the U(1)X Higgs boson are fixed. Focusing on the case that the extra U(1)X gauge symmetry is mostly aligned along the SM U(1)Y direction, we investigate a consistency between the inflationary predictions and the latest LHC Run-2 results on the search for a narrow resonance with the di-lepton final state.
- Authors:
-
- Univ. of Alabama, Tuscaloosa, AL (United States). Dept. of Physics and Astronomy
- Yamagata Univ. (Japan). Graduate School of Science and Engineering
- Publication Date:
- Research Org.:
- Univ. of Alabama, Tuscaloosa, AL (United States)
- Sponsoring Org.:
- USDOE Office of Science (SC), High Energy Physics (HEP)
- OSTI Identifier:
- 1365638
- Alternate Identifier(s):
- OSTI ID: 1349543
- Grant/Contract Number:
- SC0013680
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Physical Review D
- Additional Journal Information:
- Journal Volume: 95; Journal Issue: 5; Journal ID: ISSN 2470-0010
- Publisher:
- American Physical Society (APS)
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
Citation Formats
Okada, Nobuchika, Okada, Satomi, and Raut, Digesh. Inflection-point inflation in a hyper-charge oriented U(1)X model. United States: N. p., 2017.
Web. doi:10.1103/PhysRevD.95.055030.
Okada, Nobuchika, Okada, Satomi, & Raut, Digesh. Inflection-point inflation in a hyper-charge oriented U(1)X model. United States. https://doi.org/10.1103/PhysRevD.95.055030
Okada, Nobuchika, Okada, Satomi, and Raut, Digesh. Fri .
"Inflection-point inflation in a hyper-charge oriented U(1)X model". United States. https://doi.org/10.1103/PhysRevD.95.055030. https://www.osti.gov/servlets/purl/1365638.
@article{osti_1365638,
title = {Inflection-point inflation in a hyper-charge oriented U(1)X model},
author = {Okada, Nobuchika and Okada, Satomi and Raut, Digesh},
abstractNote = {Inflection-point inflation is an interesting possibility to realize a successful slow-roll inflation when inflation is driven by a single scalar field with its value during inflation below the Planck mass (ΦI≲MPl). In order for a renormalization group (RG) improved effective λΦ4 potential to develop an inflection-point, the running quartic coupling λ(Φ) must exhibit a minimum with an almost vanishing value in its RG evolution, namely λ(ΦI)≃0 and βλ(ΦI)≃0, where βλ is the beta-function of the quartic coupling. Here in this paper, we consider the inflection-point inflation in the context of the minimal gauged U(1)X extended Standard Model (SM), which is a generalization of the minimal U(1)B$-$L model, and is constructed as a linear combination of the SM U(1)Y and U(1)B$-$L gauge symmetries. We identify the U(1)X Higgs field with the inflaton field. For a successful inflection-point inflation to be consistent with the current cosmological observations, the mass ratios among the U(1)X gauge boson, the right-handed neutrinos and the U(1)X Higgs boson are fixed. Focusing on the case that the extra U(1)X gauge symmetry is mostly aligned along the SM U(1)Y direction, we investigate a consistency between the inflationary predictions and the latest LHC Run-2 results on the search for a narrow resonance with the di-lepton final state.},
doi = {10.1103/PhysRevD.95.055030},
journal = {Physical Review D},
number = 5,
volume = 95,
place = {United States},
year = {Fri Mar 31 00:00:00 EDT 2017},
month = {Fri Mar 31 00:00:00 EDT 2017}
}
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