Limiting Light Dark Matter with Luminous Hadronic Loops.

Diamond, Melissa; Cappiello, Christopher V; Vincent, Aaron C; Bramante, Joseph

Diamond, Melissa; Cappiello, Christopher V; Vincent, Aaron C; Bramante, Joseph.

Afiliación

Diamond M; Department of Physics, Engineering Physics, and Astronomy, Queen's University, Kingston, Ontario, K7N 3N6, Canada; The Arthur B. McDonald Canadian Astroparticle Physics Research Institute, Kingston, Ontario, K7L 3N6, Canada and Perimeter Institute for Theoretical Physics, Waterloo, Ontario, N2L 2Y5,
Cappiello CV; Department of Physics, Engineering Physics, and Astronomy, Queen's University, Kingston, Ontario, K7N 3N6, Canada; The Arthur B. McDonald Canadian Astroparticle Physics Research Institute, Kingston, Ontario, K7L 3N6, Canada and Perimeter Institute for Theoretical Physics, Waterloo, Ontario, N2L 2Y5,
Vincent AC; Department of Physics, Engineering Physics, and Astronomy, Queen's University, Kingston, Ontario, K7N 3N6, Canada; The Arthur B. McDonald Canadian Astroparticle Physics Research Institute, Kingston, Ontario, K7L 3N6, Canada and Perimeter Institute for Theoretical Physics, Waterloo, Ontario, N2L 2Y5,
Bramante J; Department of Physics, Engineering Physics, and Astronomy, Queen's University, Kingston, Ontario, K7N 3N6, Canada; The Arthur B. McDonald Canadian Astroparticle Physics Research Institute, Kingston, Ontario, K7L 3N6, Canada and Perimeter Institute for Theoretical Physics, Waterloo, Ontario, N2L 2Y5,

Phys Rev Lett ; 132(5): 051001, 2024 Feb 02.

Article en En | MEDLINE | ID: mdl-38364124

ABSTRACT

ABSTRACT

Dark matter is typically assumed not to couple to the photon at tree level. While annihilation to photons through quark loops is often considered in indirect detection searches, such loop-level effects are usually neglected in direct detection, as they are typically subdominant to tree-level dark-matter-nucleus scattering. However, when dark matter is lighter than around 100 MeV, it carries so little momentum that it is difficult to detect with nuclear recoils at all. We show that loops of low-energy hadronic states can generate an effective dark-matter-photon coupling, and thus lead to scattering with electrons even in the absence of tree-level dark-matter-electron scattering. For light mediators, this leads to an effective fractional electric charge that may be very strongly constrained by astrophysical observations. Current and upcoming searches for dark-matter-electron scattering can thus set limits on dark-matter-proton interactions down to 1 MeV and below.

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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: Phys Rev Lett Año: 2024 Tipo del documento: Article Pais de publicación: Estados Unidos

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