Work

Haloscope Mass Coverage of the ADMX Search and the Prior a Bounce Places on the Axion Mass

Year: 2026

Type: article

Abstract: The band from 6.50e-01 to 8.00e+00 GHz corresponds to masses from 2.69e+00 to 3.31e+01 micro-electronvolts. At 1 GHz the implied decay constant is 1.38e+12 GeV, with a DFSZ coupling of 6.29e-16 per GeV and a KSVZ coupling larger by a factor of 2.57e+00, at 1.62e-15 per GeV. Every mass in the band corresponds to an oscillation temperature deep in the radiation era, far below the bounce ceiling set by the bound density of 9.72e+54 g per cubic centimetre, so the ceiling reorders nothing inside the band. The post-inflationary preference for tens of micro-electronvolts therefore stands or falls with crossover physics, not with the bounce. This study is computed from stated assumptions and published comparison values; it is not a measurement.

Source: Zenodo (CERN European Organization for Nuclear Research)

DOI: 10.5281/zenodo.24138195

Author: Aldred, William Alexander

Language: English

Topic: Dark Matter and Cosmic Phenomena

Subfield: Nuclear and High Energy Physics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: green

OpenAlex ID: W7225797603

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