Inflection-point inflation in hyper-charge oriented U(1)${}_X$ 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 (${\varphi }_I\lesssim M_{Pl}$). In order for a renormalization group (RG) improved effective $\lambda {\varphi }^4$ potential to develop an inflection-point, the running quartic coupling $\lambda (\varphi )$ must exhibit a minimum with an almost vanishing value in its RG evolution, namely $\lambda ({\varphi }_I)\simeq 0$ and ${\beta }_{\lambda }({\varphi }_I)\simeq 0$, where ${\beta }_{\lambda }$ is the beta-function of the quartic coupling. 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. %In addition, the inflection-point inflation provides a unique prediction for the running of the spectral index $\alpha \simeq -2.7\times$ ($N$ is the e-folding number), which can be tested in the near future.

21 pages, 4 figures, version to appear in Phys. Rev. D. arXiv admin note: substantial text overlap with arXiv:1610.09362

References in corpus (41)

• Planck 2015 results. XIII. Cosmological parameters
• New Generation of Parton Distributions with Uncertainties from Global QCD Analysis
• The Standard Model Higgs boson as the inflaton
• Electroweak Measurements in Electron-Positron Collisions at W-Boson-Pair Energies at LEP
• Higgs inflation: consistency and generalisations
• Standard Model Higgs boson mass from inflation: two loop analysis
• Running Inflation in the Standard Model
• Inflation scenario via the Standard Model Higgs boson and LHC
• Standard Model Higgs boson mass from inflation
• On initial conditions for the Hot Big Bang
• Preheating in the Standard Model with the Higgs-Inflaton coupled to gravity
• Gauge invariant MSSM inflaton
• Asymptotic freedom in inflationary cosmology with a non-minimally coupled Higgs field
• A facility to Search for Hidden Particles (SHiP) at the CERN SPS
• Nonexotic Neutral Gauge Bosons
• Higgs inflation at the critical point
• MSSM flat direction inflation: slow roll, stability, fine tunning and reheating
• Higgs inflation still alive
• Towards an Explicit Model of D-brane Inflation
• Inflation Physics from the Cosmic Microwave Background and Large Scale Structure
• A Delicate Universe
• Higgs boson, renormalization group, and naturalness in cosmology
• Dynamically Induced Planck Scale and Inflation
• Tensor to Scalar Ratio in Non-Minimal ${\varphi }^4$ Inflation
• $Z_{BL}^{\prime }$ portal dark matter and LHC Run-2 results
• The Standard Model Higgs Boson-Inflaton and Dark Matter
• Classically conformal U(1)${}^{\prime }$ extended Standard Model and Higgs vacuum stability
• $Z^{\prime }$-portal right-handed neutrino dark matter in the minimal U(1)${}_X$ extended Standard Model
• A-term inflation and the MSSM
• Low & High scale MSSM inflation, gravitational waves and constraints from Planck
• Linear inflation from quartic potential
• Inflection point inflation within supersymmetry
• The Observational Status of Simple Inflationary Models: an Update
• Inflection point inflation and reheating
• Reconstructing inflationary potential from BICEP2 and running of tensor modes
• Volume modulus inflection point inflation and the gravitino mass problem
• Warm Inflection
• Inflection-point Higgs Inflation
• Non-Minimal Two-Loop Inflation
• Radiative plateau inflation
• Running Non-Minimal Inflation with Stabilized Inflaton Potential

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