The Atacama Cosmology Telescope: limits on dark matter-baryon interactions from DR4 power spectra

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dc.contributor.authorLi, Zack
dc.contributor.authorAn, Rui
dc.contributor.authorGluscevic, Vera
dc.contributor.authorBoddy, Kimberly K.
dc.contributor.authorBond, J. Richard
dc.contributor.authorCalabrese, Erminia
dc.contributor.authorDunkley, Jo
dc.contributor.authorGallardo, Patricio A.
dc.contributor.authorGuan, Yilun
dc.contributor.authorHincks, Adam
dc.contributor.authorHuffenberger, Kevin M.
dc.contributor.authorKosowsky, Arthur
dc.contributor.authorLouis, Thibaut
dc.contributor.authorMadhavacheril, Mathew S.
dc.contributor.authorMoodley, Kavilan
dc.contributor.authorPage, Lyman A.
dc.contributor.authorPartridge, Bruce
dc.contributor.authorQu, Frank J.
dc.contributor.authorSalatino, Maria
dc.contributor.authorSherwin, Blake
dc.contributor.authorSifon, Cristobal
dc.contributor.authorVargas, Cristian
dc.contributor.authorWollack, Edward J.
dc.date.accessioned2025-01-20T20:16:42Z
dc.date.available2025-01-20T20:16:42Z
dc.date.issued2023
dc.description.abstractDiverse astrophysical observations suggest the existence of cold dark matter that interacts only gravitationally with radiation and ordinary baryonic matter. Any nonzero coupling between dark matter and baryons would provide a significant step towards un-derstanding the particle nature of dark matter. Measurements of the cosmic microwave background (CMB) provide constraints on such a coupling that complement laboratory searches. In this work we place upper limits on a variety of models for dark matter elastic scattering with protons and electrons by combining large-scale CMB data from the Planck satellite with small-scale information from Atacama Cosmology Telescope (ACT) DR4 data. In the case of velocity-independent scattering, we obtain bounds on the interaction cross section for protons that are 40% tighter than previous constraints from the CMB anisotropy. For some models with velocity-dependent scattering we find best-fitting cross sections with a 2a-deviation from zero, but these scattering models are not statistically preferred over ACDM in terms of model selection.
dc.fuente.origenWOS
dc.identifier.doi10.1088/1475-7516/2023/02/046
dc.identifier.issn1475-7516
dc.identifier.urihttps://doi.org/10.1088/1475-7516/2023/02/046
dc.identifier.urihttps://repositorio.uc.cl/handle/11534/92347
dc.identifier.wosidWOS:000946359400001
dc.issue.numero2
dc.language.isoen
dc.revistaJournal of cosmology and astroparticle physics
dc.rightsacceso restringido
dc.subjectCMBR experiments
dc.subjectcosmological perturbation theory
dc.subjectdark matter theory
dc.titleThe Atacama Cosmology Telescope: limits on dark matter-baryon interactions from DR4 power spectra
dc.typeartículo
sipa.indexWOS
sipa.trazabilidadWOS;2025-01-12
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