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 ~ √μMP/λμ ~ 1010–1012 GeV . These fa values correspond to axion masses somewhat above the projected ADMX search regions.
- Authors:
-
- Univ. of Oklahoma, Norman, OK (United States); Univ. of Tokyo (Japan)
- 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}
}
Web of Science
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Works referencing / citing this record:
Revisiting the SUSY mu problem and its solutions in the LHC era
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