Z′-mediated dark matter freeze-in at stronger coupling
We study freeze-in production of fermionic dark matter mediated by a Z′ gauge boson. In particular, we explore the regime of Boltzmann-suppressed production, when the Standard Model (SM) thermal bath temperature never exceeds the dark matter mass. The corresponding gauge coupling is then required to...
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Main Authors: | Giorgio Arcadi, David Cabo-Almeida, Oleg Lebedev |
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Format: | Article |
Language: | English |
Published: |
Elsevier
2025-02-01
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Series: | Physics Letters B |
Online Access: | http://www.sciencedirect.com/science/article/pii/S0370269325000280 |
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