Low Scale Inflation at High Energy Colliders and Meson Factories

Abstract

Inflation occurring at energy densities less than (10${}^{14}$ GeV)${}^4$ produces tensor perturbations too small to be measured by cosmological surveys. However, we show that it is possible to probe low scale inflation by measuring the mass of the inflaton at low energy experiments. Detection prospects and cosmological constraints are determined for low scale quartic hilltop models of inflation paired with a curvaton field, which imprints the spectrum of scalar perturbations observed in large scale structure and on the cosmic microwave background. With cosmological constraints applied, low scale quartic inflation at energies GeV--PeV, can be mapped to an MeV--TeV mass inflaton resonance, discoverable through a Higgs portal coupling at upcoming collider and meson decay experiments. It is demonstrated that low scale inflatons can have detectably large couplings to Standard Model particles through a Higgs portal, permitting prompt reheating after inflation, without spoiling, through radiative corrections to the inflaton's self-coupling, the necessary flatness of a low scale inflationary potential. A characteristic particle spectrum for a quartic inflaton-curvaton pair is identified: to within an order of magnitude, the mass of the curvaton can be predicted from the mass of the inflaton, and vice-versa. Low scale inflation Higgs portal sensitivity targets are found for experiments like the LHC, SHiP, BEPC, and KEKB.

46 pages, 12 figures, Eq. 42 subscript fixed, published in PRD

References in corpus (18)

• The Standard Model Higgs boson as the inflaton
• Three Year Wilkinson Microwave Anisotropy Probe (WMAP) Observations: Polarization Analysis
• Search for Neutral MSSM Higgs Bosons at LEP
• Status of the Higgs Singlet Extension of the Standard Model after LHC Run 1
• Higgs-field Portal into Hidden Sectors
• Reheating constraints to inflationary models
• Physics at Super B Factory
• Reheating predictions in single field inflation
• A taste of dark matter: Flavour constraints on pseudoscalar mediators
• A Delicate Universe
• Delta r and the W-boson mass in the Singlet Extension of the Standard Model
• 21-cm Background Anisotropies Can Discern Primordial Non-Gaussianity
• The Lyth Bound of Inflation with a Tilt
• Hiding the Higgs Boson with Multiple Scalars
• Particle physics models of inflation
• Constraining Light Bosons with Radiative ${\rm Y}(1S)$ Decays
• On the Physics Case of a Super Flavour Factory
• Clearing the Brush: The Last Stand of Solo Small Field Inflation

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