A Rich Tapestry: Supersymmetric Axions, Dark Radiation, and Inflationary Reheating

Abstract

We exploit the complementarity among supersymmetry, inflation, axions, Big Bang Nucleosynthesis (BBN) and Cosmic Microwave Background Radiation (CMB) to constrain supersymmetric axion models in the light of the recent Planck and BICEP results. In particular, we derive BBN bounds coming from altering the light element abundances by taking into account hadronic and electromagnetic energy injection, and CMB constraints from black-body spectrum distortion. Lastly, we outline the viable versus excluded region of these supersymetric models that might account for the mild dark radiation observed.

8 pages, 2 figures. To appear in Phys. Rev. D

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• Nuclear spin-dependent interactions: Searches for WIMP, Axion and Topological Defect Dark Matter, and Tests of Fundamental Symmetries
• Collider and Dark Matter Searches in the Inert Doublet Model from Peccei-Quinn Symmetry
• Dark Matter from Late Invisible Decays to/of Gravitinos
• Muon Anomalous Magnetic Moment in a $SU(4)\otimes U(1{)}_N$ Model
• Non-thermal Axion Dark Radiation and Constraints
• Muon Magnetic Moment and Lepton Flavor Violation in the Economical 3-3-1 Model