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UltraViolet Freeze-in

Oct 22, 2014

24 pages

Published in:

JHEP 03 (2015) 048

Published: Mar 10, 2015

e-Print:

1410.6157 [hep-ph]

DOI:

10.1007/JHEP03(2015)048

View in:

ADS Abstract Service

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Abstract: (Springer)

If dark matter is thermally decoupled from the visible sector, the observed relic density can potentially be obtained via freeze-in production of dark matter. Typically in such models it is assumed that the dark matter is connected to the thermal bath through feeble renormalisable interactions. Here, rather, we consider the case in which the hidden and visible sectors are coupled only via non-renormalisable operators. This is arguably a more generic realisation of the dark matter freeze-in scenario, as it does not require the introduction of diminutive renormalisable couplings. We examine general aspects of freeze-in via non-renormalisable operators in a number of toy models and present several motivated implementations in the context of Beyond the Standard Model (BSM) physics. Specifically, we study models related to the Peccei-Quinn mechanism and Z

^{′}

portals.

Note:

24 pages. v2: Published version, correction to equilibration constraints. v3. Minor numerical error in eq.2.16 corrected and propagated, conclusions unchanged

Cosmology of Theories beyond the SM
Beyond Standard Model
Effective field theories
new physics
Peccei-Quinn
dark matter: relic density
dark matter: production
dark matter: coupling
coupling: nonrenormalizable
operator: nonrenormalizable

References(58)

Figures(5)

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