Axion Dark Matter Coupling to Resonant Photons via Magnetic Field

Ben T. McAllister, Stephen R. Parker, and Michael E. Tobar
Phys. Rev. Lett. 116, 161804 – Published 21 April 2016; Erratum Phys. Rev. Lett. 117, 159901 (2016)

Abstract

We show that the magnetic component of the photon field produced by dark matter axions via the two-photon coupling mechanism in a Sikivie haloscope is an important parameter passed over in previous analysis and experiments. The interaction of the produced photons will be resonantly enhanced as long as they couple to the electric or magnetic mode structure of the haloscope cavity. For typical haloscope experiments the electric and magnetic couplings are equal, and this has implicitly been assumed in past sensitivity calculations. However, for future planned searches such as those at high frequency, which synchronize multiple cavities, the sensitivity will be altered due to different magnetic and electric couplings. We define the complete electromagnetic form factor and discuss its implications for current and future dark matter axion searches over a wide range of masses.

  • Figure
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  • Received 17 December 2015

DOI:https://doi.org/10.1103/PhysRevLett.116.161804

© 2016 American Physical Society

Physics Subject Headings (PhySH)

  1. Research Areas
  1. Physical Systems
Gravitation, Cosmology & AstrophysicsParticles & Fields

Erratum

Erratum: Axion Dark Matter Coupling to Resonant Photons via Magnetic Field [Phys. Rev. Lett. 116, 161804 (2016)]

Ben T. McAllister, Stephen R. Parker, and Michael E. Tobar
Phys. Rev. Lett. 117, 159901 (2016)

Authors & Affiliations

Ben T. McAllister*, Stephen R. Parker, and Michael E. Tobar

  • ARC Centre of Excellence for Engineered Quantum Systems, School of Physics, The University of Western Australia, 35 Stirling Highway, Crawley 6009, Western Australia, Australia

  • *ben.mcallister@uwa.edu.au
  • michael.tobar@uwa.edu.au

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Issue

Vol. 116, Iss. 16 — 22 April 2016

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