Reconciling Planck results with low redshift astronomical measurements

Abstract

We show that emerging tension between the direct astronomical measurements at low redshifts and cosmological parameters deduced from the Planck measurements of the CMB anisotropies can be alleviated if the dark matter consists of two fractions, stable part being dominant and a smaller unstable fraction. The latter constitutes $\sim 10$ per cent at the recombination epoch if decays by now.

Replaced with the version accepted for publication in Phys. Rev. D, Rapid Communications

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