Abstract
We study the cosmological effects of two-body dark matter decays in which the products of the decay include a massless and a massive particle. We show that if the massive daughter particle is slightly warm it is possible to relieve the tension between distance ladder measurements of the present-day Hubble parameter with measurements from the cosmic microwave background.
- Received 21 March 2019
DOI:https://doi.org/10.1103/PhysRevD.99.121302
© 2019 American Physical Society