2015/03/13 by Kyu Jung Bae, Bae, Kyu Jung, Howard Baer +8
Physics and Astronomy · #Cosmology and Gravitation Theories #Cosmology and Nongalactic Astrophysics (astro-ph.CO) #Dark Matter and Cosmic Phenomena #FOS: Physical sciences #High Energy Physics - Phenomenology (hep-ph) #Particle physics theoretical and experimental studies
paper · pdf · doi:10.48550/arxiv.1503.04137
openalex publication_date 2015/03/13 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
By insisting on naturalness in both the electroweak and QCD sectors of the\nMSSM, the portrait for dark matter production is seriously modified from the\nusual WIMP miracle picture. In SUSY models with radiatively-driven naturalness\n(radiative natural SUSY or RNS) which include a DFSZ-like solution to the\nstrong CP and SUSY mu problems, dark matter is expected to be an admixture of\nboth axions and higgsino-like WIMPs. The WIMP/axion abundance calculation\nrequires simultaneous solution of a set of coupled Boltzmann equations which\ndescribe quasi-stable axinos and saxions. In most of parameter space, axions\nmake up the dominant contribution of dark matter although regions of WIMP\ndominance also occur. We show the allowed range of PQ scale fa and compare to\nthe values expected to be probed by the ADMX axion detector in the near future.\nWe also show WIMP detection rates which are suppressed from usual expectations\nbecause now WIMPs comprise only a fraction of the total dark matter.\nNonetheless, ton-scale noble liquid detectors should be able to probe the\nentirety of RNS parameter space. Indirect WIMP detection rates are less\npropitious since they are reduced by the square of the depleted WIMP abundance.\n