Elsevier

Physics Letters B

Volume 771, 10 August 2017, Pages 162-167
Physics Letters B

Constraining dark photon model with dark matter from CMB spectral distortions

https://doi.org/10.1016/j.physletb.2017.04.062Get rights and content
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Abstract

Many extensions of Standard Model (SM) include a dark sector which can interact with the SM sector via a light mediator. We explore the possibilities to probe such a dark sector by studying the distortion of the CMB spectrum from the blackbody shape due to the elastic scatterings between the dark matter and baryons through a hidden light mediator. We in particular focus on the model where the dark sector gauge boson kinetically mixes with the SM and present the future experimental prospect for a PIXIE-like experiment along with its comparison to the existing bounds from complementary terrestrial experiments.

Keywords

Dark matter
Dark photon
CMB distortion

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