Constraints on dark matter to dark radiation conversion in the late universe with DES-Y1 and external data

(DES Collaboration)

doi:10.1103/PhysRevD.103.123528

Constraints on dark matter to dark radiation conversion in the late universe with DES-Y1 and external data

(DES Collaboration)

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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 <0.32 for DES-Y1 3x2pt data, <0.030 for CMB+SN+BAO data, and <0.037 for the combined dataset. The probability that the DES and CMB+SN+BAO datasets are concordant increases from 4% for the ΛCDM model to 8% (less tension) for DMDR. The tension in S8=σ8ωm/0.3 between DES-Y1 3x2pt and CMB+SN+BAO is slightly reduced from 2.3σ to 1.9σ. We find no reduction in the Hubble tension when the combined data is compared to distance-ladder measurements in the DMDR model. The maximum-posterior goodness-of-fit statistics of DMDR and ΛCDM model are comparable, indicating no preference for the DMDR cosmology over ΛCDM.

Original language	English
Article number	123528
Journal	Physical Review D
Volume	103
Issue number	12
DOIs	https://doi.org/10.1103/PhysRevD.103.123528
State	Published - Jun 15 2021

Funding

We thank Professor Shanjie Zhang, Professor Jianming Jin, and Dr. Robert C. Forrey for the development of the Hypergeometric Function calculation routine used in our DMDR-CAMB. Funding for the DES Projects has been provided by the U.S. Department of Energy, the U.S. National Science Foundation, the Ministry of Science and Education of Spain, the Science and Technology Facilities Council of the United Kingdom, the Higher Education Funding Council for England, the National Center for Supercomputing Applications at the University of Illinois at Urbana-Champaign, the Kavli Institute of Cosmological Physics at the University of Chicago, the Center for Cosmology and Astro-Particle Physics at the Ohio State University, the Mitchell Institute for Fundamental Physics and Astronomy at Texas A&M University, Financiadora de Estudos e Projetos, Funda\u00E7\u00E3o Carlos Chagas Filho de Amparo \u00E0 Pesquisa do Estado do Rio de Janeiro, Conselho Nacional de Desenvolvimento Cient\u00EDfico e Tecnol\u00F3gico and the Minist\u00E9rio da Ci\u00EAncia, Tecnologia e Inova\u00E7\u00E3o, the Deutsche Forschungsgemeinschaft and the Collaborating Institutions in the Dark Energy Survey. The Collaborating Institutions are Argonne National Laboratory, the University of California at Santa Cruz, the University of Cambridge, Centro de Investigaciones Energ\u00E9ticas, Medioambientales y Tecnol\u00F3gicas-Madrid, the University of Chicago, University College London, the DES-Brazil Consortium, the University of Edinburgh, the Eidgen\u00F6ssische Technische Hochschule (ETH) Z\u00FCrich, Fermi National Accelerator Laboratory, the University of Illinois at Urbana-Champaign, the Institut de Ci\u00E8ncies de l\u2019Espai (IEEC/CSIC), the Institut de F\u00EDsica d\u2019Altes Energies, Lawrence Berkeley National Laboratory, the Ludwig-Maximilians Universit\u00E4t M\u00FCnchen and the associated Excellence Cluster Universe, the University of Michigan, NFS\u2019s NOIRLab, the University of Nottingham, The Ohio State University, the University of Pennsylvania, the University of Portsmouth, SLAC National Accelerator Laboratory, Stanford University, the University of Sussex, Texas A&M University, and the OzDES Membership Consortium. Based in part on observations at Cerro Tololo Inter-American Observatory at NSF\u2019s NOIRLab (NOIRLab Prop. ID 2012B-0001; PI: J. Frieman), which is managed by the Association of Universities for Research in Astronomy (AURA) under a cooperative agreement with the National Science Foundation. The DES data management system is supported by the National Science Foundation under Grants No. AST-1138766 and No. AST-1536171. The DES participants from Spanish institutions are partially supported by MICINN under Grants No. ESP2017-89838, No. PGC2018-094773, No. PGC2018-102021, No. SEV-2016-0588, No. SEV-2016-0597, and No. MDM-2015-0509, some of which include ERDF funds from the European Union. I.\u2009F.\u2009A.\u2009E. is partially funded by the CERCA program of the Generalitat de Catalunya. Research leading to these results has received funding from the European Research Council under the European Union\u2019s Seventh Framework Program (Grant No. FP7/2007-2013) including ERC Grants Agreement No. 240672, No. 291329, and No. 306478. We acknowledge support from the Brazilian Instituto Nacional de Ci\u00EAncia e Tecnologia (INCT) do e-Universo (CNPq Grant No. 465376/2014-2). This manuscript has been authored by Fermi Research Alliance, LLC under Contract No. DE-AC02-07CH11359 with the U.S. Department of Energy, Office of Science, Office of High Energy Physics.

Funders	Funder number
Mitchell Institute for Fundamental Physics and Astronomy at Texas A&M University
Brazilian Instituto Nacional de Ciência e Tecnologia
High Energy Physics
Fundação Carlos Chagas Filho de Amparo à Pesquisa do Estado do Rio de Janeiro
Ohio State University
University of Chicago
Engineering Research Centers
Generalitat de Catalunya
Higher Education Funding Council for England
INCT
Financiadora de Estudos e Projetos
Ministry of Education and Science of Ukraine
Deutsche Forschungsgemeinschaft
European Commission
U.S. Department of Energy
Science and Technology Facilities Council of the United Kingdom
Ministério da Ciência, Tecnologia e Inovação
Office of Science
National Center for Supercomputing Applications at the University of Illinois at Urbana-Champaign
European Research Council
European Regional Development Fund
Conselho Nacional de Desenvolvimento Científico e Tecnológico	465376/2014-2
National Science Foundation	1138766, AST-1536171
Fermi Research Alliance, LLC	DE-AC02-07CH11359
Ministerio de Ciencia e Innovación	SEV-2016-0588, SEV-2016-0597, MDM-2015-0509, PGC2018-094773, PGC2018-102021, ESP2017-89838
Collaborating Institutions in the Dark Energy Survey	2012B-0001
Seventh Framework Programme	1517422, FP7/2007-2013, 1138766, 240672, 306478, 291329

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10.1103/PhysRevD.103.123528

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@article{03d87295be6c4504a31db90e9f9ac279,

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 <0.32 for DES-Y1 3x2pt data, <0.030 for CMB+SN+BAO data, and <0.037 for the combined dataset. The probability that the DES and CMB+SN+BAO datasets are concordant increases from 4% for the ΛCDM model to 8% (less tension) for DMDR. The tension in S8=σ8ωm/0.3 between DES-Y1 3x2pt and CMB+SN+BAO is slightly reduced from 2.3σ to 1.9σ. We find no reduction in the Hubble tension when the combined data is compared to distance-ladder measurements in the DMDR model. The maximum-posterior goodness-of-fit statistics of DMDR and ΛCDM model are comparable, indicating no preference for the DMDR cosmology over ΛCDM.",

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 Liddle, {A. R.} and J. Blazek and A. Campos and R. Cawthon and A. Choi and S. Dodelson and J. Elvin-Poole and D. Gruen and Ross, {A. J.} and Secco, {L. F.} and I. Sevilla-Noarbe and E. Sheldon and Troxel, {M. A.} and J. Zuntz and Abbott, {T. M.C.} and M. Aguena and S. Allam and J. Annis and S. Avila and E. Bertin and S. Bhargava and Bridle, {S. L.} 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 Pereira, {M. E.S.} and Davis, {T. M.} and P. Doel and Eifler, {T. F.} and I. Ferrero and P. Fosalba and J. Frieman and E. Suchyta",

note = "Publisher Copyright: {\textcopyright} 2021 American Physical Society. ",

year = "2021",

month = jun,

day = "15",

doi = "10.1103/PhysRevD.103.123528",

language = "English",

volume = "103",

journal = "Physical Review D",

issn = "2470-0010",

publisher = "American Physical Society",

number = "12",

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TY - JOUR

T1 - Constraints on dark matter to dark radiation conversion in the late universe with DES-Y1 and external data

AU - (DES Collaboration)

AU - Chen, A.

AU - Huterer, D.

AU - Lee, S.

AU - Ferté, A.

AU - Weaverdyck, N.

AU - Alves, O.

AU - Leonard, C. D.

AU - Maccrann, N.

AU - Raveri, M.

AU - Porredon, A.

AU - Di Valentino, E.

AU - Muir, J.

AU - Lemos, P.

AU - Liddle, A. R.

AU - Blazek, J.

AU - Campos, A.

AU - Cawthon, R.

AU - Choi, A.

AU - Dodelson, S.

AU - Elvin-Poole, J.

AU - Gruen, D.

AU - Ross, A. J.

AU - Secco, L. F.

AU - Sevilla-Noarbe, I.

AU - Sheldon, E.

AU - Troxel, M. A.

AU - Zuntz, J.

AU - Abbott, T. M.C.

AU - Aguena, M.

AU - Allam, S.

AU - Annis, J.

AU - Avila, S.

AU - Bertin, E.

AU - Bhargava, S.

AU - Bridle, S. L.

AU - Brooks, D.

AU - Carnero Rosell, A.

AU - Carrasco Kind, M.

AU - Carretero, J.

AU - Costanzi, M.

AU - Crocce, M.

AU - Da Costa, L. N.

AU - Pereira, M. E.S.

AU - Davis, T. M.

AU - Doel, P.

AU - Eifler, T. F.

AU - Ferrero, I.

AU - Fosalba, P.

AU - Frieman, J.

AU - Suchyta, E.

PY - 2021/6/15

Y1 - 2021/6/15

N2 - 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 <0.32 for DES-Y1 3x2pt data, <0.030 for CMB+SN+BAO data, and <0.037 for the combined dataset. The probability that the DES and CMB+SN+BAO datasets are concordant increases from 4% for the ΛCDM model to 8% (less tension) for DMDR. The tension in S8=σ8ωm/0.3 between DES-Y1 3x2pt and CMB+SN+BAO is slightly reduced from 2.3σ to 1.9σ. We find no reduction in the Hubble tension when the combined data is compared to distance-ladder measurements in the DMDR model. The maximum-posterior goodness-of-fit statistics of DMDR and ΛCDM model are comparable, indicating no preference for the DMDR cosmology over ΛCDM.

AB - 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 <0.32 for DES-Y1 3x2pt data, <0.030 for CMB+SN+BAO data, and <0.037 for the combined dataset. The probability that the DES and CMB+SN+BAO datasets are concordant increases from 4% for the ΛCDM model to 8% (less tension) for DMDR. The tension in S8=σ8ωm/0.3 between DES-Y1 3x2pt and CMB+SN+BAO is slightly reduced from 2.3σ to 1.9σ. We find no reduction in the Hubble tension when the combined data is compared to distance-ladder measurements in the DMDR model. The maximum-posterior goodness-of-fit statistics of DMDR and ΛCDM model are comparable, indicating no preference for the DMDR cosmology over ΛCDM.

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U2 - 10.1103/PhysRevD.103.123528

DO - 10.1103/PhysRevD.103.123528

M3 - Article

AN - SCOPUS:85108230232

SN - 2470-0010

VL - 103

JO - Physical Review D

JF - Physical Review D

IS - 12

M1 - 123528

ER -

Constraints on dark matter to dark radiation conversion in the late universe with DES-Y1 and external data

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