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Title: Leptogenesis scenarios for natural SUSY with mixed axion-higgsino dark matter

Abstract

Supersymmetric models with radiatively-driven electroweak naturalness require light higgsinos of mass ~ 100–300 GeV . Naturalness in the QCD sector is invoked via the Peccei-Quinn (PQ) axion leading to mixed axion-higgsino dark matter. The SUSY DFSZ axion model provides a solution to the SUSY μ problem and the Little Hierarchy μL << m3/2 may emerge as a consequence of a mismatch between PQ and hidden sector mass scales. The traditional gravitino problem is now augmented by the axino and saxion problems, since these latter particles can also contribute to overproduction of WIMPs or dark radiation, or violation of BBN constraints. We compute regions of the TR vs. m3/2 plane allowed by BBN, dark matter and dark radiation constraints for various PQ scale choices fa. These regions are compared to the values needed for thermal leptogenesis, non-thermal leptogenesis, oscillating sneutrino leptogenesis and Affleck-Dine leptogenesis. The latter three are allowed in wide regions of parameter space for PQ scale fa~ 1010–1012 GeV which is also favored by naturalness: fa ~ √μMPμ ~ 1010–1012 GeV . These fa values correspond to axion masses somewhat above the projected ADMX search regions.

Authors:
 [1]; ORCiD logo [2];  [2];  [2]
  1. Univ. of Oklahoma, Norman, OK (United States); Univ. of Tokyo (Japan)
  2. Univ. of Oklahoma, Norman, OK (United States)
Publication Date:
Research Org.:
Univ. of Oklahoma, Norman, OK (United States)
Sponsoring Org.:
USDOE Office of Science (SC), High Energy Physics (HEP)
OSTI Identifier:
1777473
Report Number(s):
arXiv:1510.00724
Journal ID: ISSN 1475-7516; TRN: US2209469
Grant/Contract Number:  
SC0009956
Resource Type:
Accepted Manuscript
Journal Name:
Journal of Cosmology and Astroparticle Physics
Additional Journal Information:
Journal Volume: 2016; Journal Issue: 01; Journal ID: ISSN 1475-7516
Publisher:
Institute of Physics (IOP)
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; leptogenesis; supersymmetry; dark matter; axion

Citation Formats

Bae, Kyu Jung, Baer, Howard A., Serce, Hasan, and Zhang, Yi-Fan. Leptogenesis scenarios for natural SUSY with mixed axion-higgsino dark matter. United States: N. p., 2016. Web. doi:10.1088/1475-7516/2016/01/012.
Bae, Kyu Jung, Baer, Howard A., Serce, Hasan, & Zhang, Yi-Fan. Leptogenesis scenarios for natural SUSY with mixed axion-higgsino dark matter. United States. https://doi.org/10.1088/1475-7516/2016/01/012
Bae, Kyu Jung, Baer, Howard A., Serce, Hasan, and Zhang, Yi-Fan. Thu . "Leptogenesis scenarios for natural SUSY with mixed axion-higgsino dark matter". United States. https://doi.org/10.1088/1475-7516/2016/01/012. https://www.osti.gov/servlets/purl/1777473.
@article{osti_1777473,
title = {Leptogenesis scenarios for natural SUSY with mixed axion-higgsino dark matter},
author = {Bae, Kyu Jung and Baer, Howard A. and Serce, Hasan and Zhang, Yi-Fan},
abstractNote = {Supersymmetric models with radiatively-driven electroweak naturalness require light higgsinos of mass ~ 100–300 GeV . Naturalness in the QCD sector is invoked via the Peccei-Quinn (PQ) axion leading to mixed axion-higgsino dark matter. The SUSY DFSZ axion model provides a solution to the SUSY μ problem and the Little Hierarchy μL << m3/2 may emerge as a consequence of a mismatch between PQ and hidden sector mass scales. The traditional gravitino problem is now augmented by the axino and saxion problems, since these latter particles can also contribute to overproduction of WIMPs or dark radiation, or violation of BBN constraints. We compute regions of the TR vs. m3/2 plane allowed by BBN, dark matter and dark radiation constraints for various PQ scale choices fa. These regions are compared to the values needed for thermal leptogenesis, non-thermal leptogenesis, oscillating sneutrino leptogenesis and Affleck-Dine leptogenesis. The latter three are allowed in wide regions of parameter space for PQ scale fa~ 1010–1012 GeV which is also favored by naturalness: fa ~ √μMP/λμ ~ 1010–1012 GeV . These fa values correspond to axion masses somewhat above the projected ADMX search regions.},
doi = {10.1088/1475-7516/2016/01/012},
journal = {Journal of Cosmology and Astroparticle Physics},
number = 01,
volume = 2016,
place = {United States},
year = {Thu Jan 07 00:00:00 EST 2016},
month = {Thu Jan 07 00:00:00 EST 2016}
}

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Works referencing / citing this record:

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Revisiting the SUSY μ problem and its solutions in the LHC era
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