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Scattering of dark pions in Sp(4) gauge theory

Yannick Dengler Orcid Logo, Axel Maas Orcid Logo, Fabian Zierler

Physical Review D, Volume: 110, Issue: 5

Swansea University Author: Fabian Zierler

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DOI (Published version): 10.1103/PhysRevD.110.054513

Abstract

Analyses of astrophysical data provide first hints on the self-interactions of dark matter at low energies. Lattice calculations of dark matter theories can be used to investigate them, especially in the case of strongly-interacting dark matter. We consider Sp(4) gauge theory with two fundamental fe...

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Published in: Physical Review D
ISSN: 2470-0010 2470-0029
Published: American Physical Society 2024
Online Access: Check full text

URI: https://cronfa.swan.ac.uk/Record/cronfa67451
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Abstract: Analyses of astrophysical data provide first hints on the self-interactions of dark matter at low energies. Lattice calculations of dark matter theories can be used to investigate them, especially in the case of strongly-interacting dark matter. We consider Sp(4) gauge theory with two fundamental fermions as a candidate theory. We compute the scattering phase shift for the scattering of two identical dark pions and determine the parameters of the effective range expansion. Our exploratory results in the supposedly most common interaction channel provide a lower limit for the dark matter mass when compared to astrophysical data. We also provide first benchmarks of velocity-weighted cross-sections in the relevant non-relativistic domain.
Keywords: Composite models, dark matter, lattice QCD, Lattice field theory, particle dark matter, phase shift, strong interaction, gravitation, cosmology, astrophysics
College: Faculty of Science and Engineering
Funders: Funded by SCOAP3
Issue: 5

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