An Improved RF Cavity Search for Halo Axions

Journal Article · Tue Nov 11 00:00:00 EST 2003 · Physical Review. D, Particles Fields

OSTI ID:15013814

Asztalos, S; Bradley, R; Duffy, L; Hagmann, C; Kinion, D; Moltz, D; Rosenberg, L; Sikivie, P; Stoeffl, W; Sullivan, N; Tanner, D; van Bibber, K; Yu, D

The axion is a hypothetical elementary particle and cold dark matter candidate. In this RF cavity experiment, halo axions entering a resonant cavity immersed in a static magnetic field convert into microwave photons, with the resulting photons detected by a low-noise receiver. The ADMX Collaboration presents new limits on the axion-to-photon coupling and local axion dark matter halo mass density from a RF cavity axion search in the axion mass range 1.9-2.3 {micro}eV, broadening the search range to 1.9-3.3 {micro}eV. In addition, we report first results from an improved analysis technique.

• Research Organization: Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
• Sponsoring Organization: USDOE
• DOE Contract Number: W-7405-ENG-48
• OSTI ID: 15013814
• Report Number(s): UCRL-JRNL-201044; PRVDAQ; TRN: US0801281
• Journal Information: Physical Review. D, Particles Fields, Vol. 69; ISSN 0556-2821
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUMM MECHANICS
GENERAL PHYSICS
AXIONS
ELEMENTARY PARTICLES
MAGNETIC FIELDS
NONLUMINOUS MATTER
PHOTONS