@article{c20c11b188094c63af8093a7aff06d51,
title = "Constraints on dark matter to dark radiation conversion in the late universe with DES-Y1 and external data",
abstract = "We study a phenomenological class of models where dark matter converts to dark radiation in the low redshift epoch. This class of models, dubbed DMDR, characterizes the evolution of comoving dark-matter density with two extra parameters, and may be able to help alleviate the observed discrepancies between early and late-time probes of the Universe. We investigate how the conversion affects key cosmological observables such as the cosmic microwave background (CMB) temperature and matter power spectra. Combining 3x2pt data from Year 1 of the Dark Energy Survey, Planck-2018 CMB temperature and polarization data, supernovae (SN) Type Ia data from Pantheon, and baryon acoustic oscillation (BAO) data from BOSS DR12, MGS and 6dFGS, we place new constraints on the amount of dark matter that has converted to dark radiation and the rate of this conversion. The fraction of the dark matter that has converted since the beginning of the Universe in units of the current amount of dark matter, ζ, is constrained at 68% confidence level to be ",
keywords = "astro-ph.CO, hep-ph",
author = "{(DES Collaboration)} and A. Chen and D. Huterer and S. Lee and A. Fert{\'e} and N. Weaverdyck and O. Alves and Leonard, {C. D.} and N. MacCrann and M. Raveri and A. Porredon and {Di Valentino}, E. and J. Muir and P. Lemos and A.R. Liddle and J. Blazek and A. Campos and R. Cawthon and A. Choi and S. Dodelson and J. Elvin-Poole and D. Gruen and A.J. Ross and L.F. Secco and I. Sevilla-Noarbe and E. Sheldon and Troxel, {M. A.} and J. Zuntz and T.M.C. Abbott and M. Aguena and S. Allam and J. Annis and S. Avila and E. Bertin and S. Bhargava and S.L. Bridle and D. Brooks and {Carnero Rosell}, A. and {Carrasco Kind}, M. and J. Carretero and M. Costanzi and M. Crocce and {da Costa}, L.N. and M.E.S. Pereira and T.M. Davis and P. Doel and T.F. Eifler and I. Ferrero and P. Fosalba and J. Frieman and J. Garcia-Bellido and E. Gaztanaga and D.W. Gerdes and R.A. Gruendl and J. Gschwend and G. Gutierrez and S.R. Hinton and D.L. Hollowood and K. Honscheid and B. Hoyle and D.J. James and M. Jarvis and K. Kuehn and O. Lahav and M.A.G. Maia and J.L. Marshall and F. Menanteau and R. Miquel and R. Morgan and A. Palmese and F. Paz-Chinchon and A.A. Plazas and A. Roodman and E. Sanchez and V. Scarpine and M. Schubnell and S. Serrano and M. Smith and E. Suchyta and G. Tarle and D. Thomas and C. To and T.N. Varga and J. Weller and R.D. Wilkinson",
note = "23 pages, 11 figures. DES extensions group. Accepted by PRD",
year = "2021",
month = jun,
day = "10",
doi = "10.1103/PhysRevD.103.123528",
language = "English",
volume = "103",
pages = "1--25",
journal = "Physical Review D",
issn = "1550-7998",
publisher = "American Physical Society",
number = "12",
}