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Probing Dark Photons with Plasma Haloscopes | Graciela B. Gelmini
; Alexander J. Millar
; Volodymyr Takhistov
; Edoardo Vitagliano
; | Date: |
11 Jun 2020 | Abstract: | Dark photons (DPs) produced in the early Universe are well motivated dark
matter (DM) candidates. We show that the recently proposed tunable plasma
haloscopes are particularly advantageous for DP searches. While in-medium
effects suppress the DP signal in conventional searches, plasma haloscopes make
use of metamaterials that enable resonant absorption of the DP by matching its
mass to a tunable plasma frequency and thus enable efficient plasmon
production. Using thermal field theory, we confirm the in-medium DP absorption
rate within the detector. This scheme allows to competitively explore a
significant part of the DP DM parameter space in the DP mass range of $6-400$
$mu$eV. If a signal is observed, the observation of a daily or annual
modulation of the signal would be crucial to clearly identify the signal as due
to DP DM and could shed light on the production mechanism. | Source: | arXiv, 2006.6836 | Services: | Forum | Review | PDF | Favorites |
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