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DESI forecast for dark matter-neutrino interactions using EFTofLSS

Mosbech, Markus R. 1; Casas, Santiago; Lesgourgues, Julien; Linde, Dennis; Dizgah, Azadeh Moradinezhad; Radermacher, Christian; Truong, Jannik
1 Institut für Theoretische Teilchenphysik (TTP), Karlsruher Institut für Technologie (KIT)

Abstract:

We apply the Effective Field Theory of Large Scale Structure (EFTofLSS) to non-standard models of dark matter with suppressed small-scale structure imprinted by early-time physics, here exemplified by interacting dark matter (IDM) coupled to standard model neutrinos, and cross-check that the EFTofLSS has no trouble replicating the real-space halo-halo power spectrum from N-body simulations. We perform forecasts for a DESI ELG-like experiment using the redshift-space power spectrum and find that, under very conservative priors on these parameters, the EFTofLSS is not expected to yield strong constraints on dark matter interactions. However, with a better understanding of the evolution of counterterms and stochastic terms with redshift, realistic IDM models could in principle be detected using the full-shape power spectrum analysis of such a spectroscopic galaxy survey.


Verlagsausgabe §
DOI: 10.5445/IR/1000182962
Veröffentlicht am 10.07.2025
Originalveröffentlichung
DOI: 10.1088/1475-7516/2025/05/040
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Zitationen: 1
Cover der Publikation
Zugehörige Institution(en) am KIT Institut für Theoretische Teilchenphysik (TTP)
Publikationstyp Zeitschriftenaufsatz
Publikationsdatum 01.05.2025
Sprache Englisch
Identifikator ISSN: 1475-7516, 1475-7508
KITopen-ID: 1000182962
Erschienen in Journal of Cosmology and Astroparticle Physics
Verlag Institute of Physics Publishing Ltd (IOP Publishing Ltd)
Band 2025
Heft 05
Seiten 040
Nachgewiesen in Web of Science
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