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Title: Prospects for axion detection in natural SUSY with mixed axion-higgsino dark matter: back to invisible?

Abstract

Under the expectation that nature is natural, we extend the Standard Model to include SUSY to stabilize the electroweak sector and PQ symmetry to stabilize the QCD sector. Then natural SUSY arises from a Kim-Nilles solution to the SUSY μ problem which allows for a little hierarchy where μ∼ f {sub a} {sup 2}/ M {sub P} {sub ∼} 100−300 GeV while the SUSY particle mass scale m {sub SUSY}∼ 1−10 TeV >> μ. Dark matter then consists of two particles: a higgsino-like WIMP and a SUSY DFSZ axion. The range of allowed axion mass values m {sub a} depends on the mixed axion-higgsino relic density. The range of m {sub a} is actually restricted in this case by limits on WIMPs from direct and indirect detection experiments. We plot the expected axion detection rate at microwave cavity experiments. The axion-photon-photon coupling is severely diminished by charged higgsino contributions to the anomalous coupling. In this case, the axion may retreat, at least temporarily, back into the regime of near invisibility. From our results, we urge new ideas for techniques which probe both deeper and more broadly into axion coupling versus axion mass parameter space.

Authors:
 [1]; ;  [2]
  1. Center for Theoretical Physics of the Universe, Institute for Basic Science (IBS), Daejeon 34051 (Korea, Republic of)
  2. Department of Physics and Astronomy, University of Oklahoma, Norman, OK 73019 (United States)
Publication Date:
OSTI Identifier:
22676163
Resource Type:
Journal Article
Resource Relation:
Journal Name: Journal of Cosmology and Astroparticle Physics; Journal Volume: 2017; Journal Issue: 06; Other Information: Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; AXIONS; COUPLING; DENSITY; DETECTION; GEV RANGE; HIGGSINOS; MASS; MICROWAVE RADIATION; NONLUMINOUS MATTER; PHOTONS; QUANTUM CHROMODYNAMICS; SPACE; STANDARD MODEL; SUPERSYMMETRY; TEV RANGE; WIMPS

Citation Formats

Bae, Kyu Jung, Baer, Howard, and Serce, Hasan, E-mail: kyujungbae@ibs.re.kr, E-mail: baer@nhn.ou.edu, E-mail: serce@ou.edu. Prospects for axion detection in natural SUSY with mixed axion-higgsino dark matter: back to invisible?. United States: N. p., 2017. Web. doi:10.1088/1475-7516/2017/06/024.
Bae, Kyu Jung, Baer, Howard, & Serce, Hasan, E-mail: kyujungbae@ibs.re.kr, E-mail: baer@nhn.ou.edu, E-mail: serce@ou.edu. Prospects for axion detection in natural SUSY with mixed axion-higgsino dark matter: back to invisible?. United States. doi:10.1088/1475-7516/2017/06/024.
Bae, Kyu Jung, Baer, Howard, and Serce, Hasan, E-mail: kyujungbae@ibs.re.kr, E-mail: baer@nhn.ou.edu, E-mail: serce@ou.edu. Thu . "Prospects for axion detection in natural SUSY with mixed axion-higgsino dark matter: back to invisible?". United States. doi:10.1088/1475-7516/2017/06/024.
@article{osti_22676163,
title = {Prospects for axion detection in natural SUSY with mixed axion-higgsino dark matter: back to invisible?},
author = {Bae, Kyu Jung and Baer, Howard and Serce, Hasan, E-mail: kyujungbae@ibs.re.kr, E-mail: baer@nhn.ou.edu, E-mail: serce@ou.edu},
abstractNote = {Under the expectation that nature is natural, we extend the Standard Model to include SUSY to stabilize the electroweak sector and PQ symmetry to stabilize the QCD sector. Then natural SUSY arises from a Kim-Nilles solution to the SUSY μ problem which allows for a little hierarchy where μ∼ f {sub a} {sup 2}/ M {sub P} {sub ∼} 100−300 GeV while the SUSY particle mass scale m {sub SUSY}∼ 1−10 TeV >> μ. Dark matter then consists of two particles: a higgsino-like WIMP and a SUSY DFSZ axion. The range of allowed axion mass values m {sub a} depends on the mixed axion-higgsino relic density. The range of m {sub a} is actually restricted in this case by limits on WIMPs from direct and indirect detection experiments. We plot the expected axion detection rate at microwave cavity experiments. The axion-photon-photon coupling is severely diminished by charged higgsino contributions to the anomalous coupling. In this case, the axion may retreat, at least temporarily, back into the regime of near invisibility. From our results, we urge new ideas for techniques which probe both deeper and more broadly into axion coupling versus axion mass parameter space.},
doi = {10.1088/1475-7516/2017/06/024},
journal = {Journal of Cosmology and Astroparticle Physics},
number = 06,
volume = 2017,
place = {United States},
year = {Thu Jun 01 00:00:00 EDT 2017},
month = {Thu Jun 01 00:00:00 EDT 2017}
}