Is the magnitude of the Peccei–Quinn scale set by the landscape?
Abstract
Rather general considerations of the string theory landscape imply a mild statistical draw towards large soft SUSY breaking terms tempered by the requirement of proper electroweak symmetry breaking where SUSY contributions to the weak scale are not too far from mweak~ 100 GeV. Such a picture leads to the prediction that mh~ 125 GeV while most sparticles are beyond current LHC reach. Here we explore the possibility that the magnitude of the Peccei-Quinn (PQ) scale fa is also set by string landscape considerations within the framework of a compelling SUSY axion model. First, we examine the case where the PQ symmetry arises as an accidental approximate global symmetry from a more fundamental gravity-safe Z$$R\atop{24}$$ symmetry and where the SUSY mu parameter arises from a Kim-Nilles operator. The pull towards large soft terms then also pulls the PQ scale as large as possible. Unless this is tempered by rather severe (unknown) cosmological or anthropic bounds on the density of dark matter, then we would expect a far greater abundance of dark matter than is observed. This conclusion cannot be negated by adopting a tiny axion misalignment angle θi because WIMPs are also overproduced at large fa. Hence, we conclude that setting the PQ scale via anthropics is highly unlikely. Instead, requiring soft SUSY breaking terms of order the gravity-mediation scale m3/2~ 10-100 TeV places the mixed axion-neutralino dark matter abundance into the intermediate scale sweet zone where fa~ 1011-1012 GeV. We compare our analysis to the more general case of a generic SUSY DFSZ axion model with uniform selection on theta_i but leading to the measured dark matter abundance: this approach leads to a preference for fa~ 1012 GeV.
- Authors:
-
- Univ. of Oklahoma, Norman, OK (United States)
- Univ. of Wisconsin, Madison, WI (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:
- 1600540
- Report Number(s):
- arXiv:1905.00443
Journal ID: ISSN 1434-6044; arXiv:1905.00443; TRN: US2103562
- Grant/Contract Number:
- SC0009956
- Resource Type:
- Accepted Manuscript
- Journal Name:
- European Physical Journal. C, Particles and Fields
- Additional Journal Information:
- Journal Volume: 79; Journal Issue: 11; Journal ID: ISSN 1434-6044
- Publisher:
- Springer
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; supersymmetry; axions; dark matter
Citation Formats
Baer, Howard, Barger, Vernon, Sengupta, Dibyashree, Serce, Hasan, Sinha, Kuver, and Deal, Robert Wiley. Is the magnitude of the Peccei–Quinn scale set by the landscape?. United States: N. p., 2019.
Web. doi:10.1140/epjc/s10052-019-7408-x.
Baer, Howard, Barger, Vernon, Sengupta, Dibyashree, Serce, Hasan, Sinha, Kuver, & Deal, Robert Wiley. Is the magnitude of the Peccei–Quinn scale set by the landscape?. United States. https://doi.org/10.1140/epjc/s10052-019-7408-x
Baer, Howard, Barger, Vernon, Sengupta, Dibyashree, Serce, Hasan, Sinha, Kuver, and Deal, Robert Wiley. Thu .
"Is the magnitude of the Peccei–Quinn scale set by the landscape?". United States. https://doi.org/10.1140/epjc/s10052-019-7408-x. https://www.osti.gov/servlets/purl/1600540.
@article{osti_1600540,
title = {Is the magnitude of the Peccei–Quinn scale set by the landscape?},
author = {Baer, Howard and Barger, Vernon and Sengupta, Dibyashree and Serce, Hasan and Sinha, Kuver and Deal, Robert Wiley},
abstractNote = {Rather general considerations of the string theory landscape imply a mild statistical draw towards large soft SUSY breaking terms tempered by the requirement of proper electroweak symmetry breaking where SUSY contributions to the weak scale are not too far from mweak~ 100 GeV. Such a picture leads to the prediction that mh~ 125 GeV while most sparticles are beyond current LHC reach. Here we explore the possibility that the magnitude of the Peccei-Quinn (PQ) scale fa is also set by string landscape considerations within the framework of a compelling SUSY axion model. First, we examine the case where the PQ symmetry arises as an accidental approximate global symmetry from a more fundamental gravity-safe Z$R\atop{24}$$ symmetry and where the SUSY mu parameter arises from a Kim-Nilles operator. The pull towards large soft terms then also pulls the PQ scale as large as possible. Unless this is tempered by rather severe (unknown) cosmological or anthropic bounds on the density of dark matter, then we would expect a far greater abundance of dark matter than is observed. This conclusion cannot be negated by adopting a tiny axion misalignment angle θi because WIMPs are also overproduced at large fa. Hence, we conclude that setting the PQ scale via anthropics is highly unlikely. Instead, requiring soft SUSY breaking terms of order the gravity-mediation scale m3/2~ 10-100 TeV places the mixed axion-neutralino dark matter abundance into the intermediate scale sweet zone where fa~ 1011-1012 GeV. We compare our analysis to the more general case of a generic SUSY DFSZ axion model with uniform selection on theta_i but leading to the measured dark matter abundance: this approach leads to a preference for fa~ 1012 GeV.},
doi = {10.1140/epjc/s10052-019-7408-x},
journal = {European Physical Journal. C, Particles and Fields},
number = 11,
volume = 79,
place = {United States},
year = {2019},
month = {11}
}
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Peccei-Quinn Symmetry from Dynamical Supersymmetry Breaking
text, January 2015
- Harigaya, Keisuke; Ibe, Masahiro; Schmitz, Kai
- arXiv
Cosmological Selection of Multi-TeV Supersymmetry
text, January 2015
- Harigaya, Keisuke; Ibe, Masahiro; Schmitz, Kai
- arXiv
Upper bounds on sparticle masses from naturalness or how to disprove weak scale supersymmetry
text, January 2015
- Baer, Howard; Barger, Vernon; Savoy, Michael
- arXiv
Limits to dark matter annihilation cross-section from a combined analysis of MAGIC and Fermi-LAT observations of dwarf satellite galaxies
text, January 2016
- Ahnen, M. L.; Ansoldi, S.; Antonelli, L. A.
- arXiv
The Higgs mass and natural supersymmetric spectrum from the landscape
text, January 2016
- Baer, Howard; Barger, Vernon; Savoy, Michael
- arXiv
SUSY under siege from direct and indirect WIMP detection experiments
text, January 2016
- Baer, Howard; Barger, Vernon; Serce, Hasan
- arXiv
The Reach of the High-Energy LHC for Gluinos and Top Squarks in SUSY Models with Light Higgsinos
text, January 2017
- Baer, Howard; Barger, Vernon; Gainer, James S.
- arXiv
LHC luminosity and energy upgrades confront natural supersymmetry models
text, January 2018
- Baer, Howard; Barger, Vernon; Gainer, James S.
- arXiv
Dimensionless constants, cosmology and other dark matters
text, January 2005
- Tegmark, Max; Aguirre, Anthony; Rees, Martin J.
- arXiv
Neutralino relic density in minimal supergravity with co-annihilations
text, January 2002
- Baer, Howard; Balazs, Csaba; Belyaev, Alexander
- arXiv
The MSSM Parameter Space with Non-Universal Higgs Masses
text, January 2002
- Ellis, John; Olive, Keith A.; Santoso, Yudi
- arXiv
Exploration of the MSSM with Non-Universal Higgs Masses
text, January 2002
- Ellis, J.; Falk, T.; Olive, K. A.
- arXiv
Axino dark matter from thermal production
text, January 2004
- Brandenburg, Arnd; Steffen, Frank Daniel
- arXiv
Living Dangerously with Low-Energy Supersymmetry
text, January 2006
- Giudice, G. F.; Rattazzi, R.
- arXiv
Solutions to the strong CP problem in a world with gravity
text, January 1992
- Holman, R.; Hsu, S. D. H.; Kephart, T.
- arXiv
Implications of supersymmetric models with natural R-parity conservation
text, January 1996
- Martin, Stephen P.
- arXiv
Constraints on the Minimal Supergravity Model from Non-standard Vacua
text, January 1996
- Baer, Howard; Brhlik, Michal; Castano, Diego
- arXiv
Dimensionless supersymmetry breaking couplings, flat directions, and the origin of intermediate mass scales
text, January 1999
- Martin, Stephen P.
- arXiv
Quantization of Four-form Fluxes and Dynamical Neutralization of the Cosmological Constant
text, January 2000
- Bousso, Raphael; Polchinski, Joseph
- arXiv
Dark Matter and The Anthropic Principle
text, January 2005
- Hellerman, Simeon; Walcher, Johannes
- arXiv
Planck-Scale Physics and the Peccei-Quinn Mechanism
text, January 1992
- Kamionkowski, Marc; March-Russell, John
- arXiv
Gravity and Global Symmetries
text, January 1995
- Kallosh, Renata; Linde, Andrei; Linde, Dmitri
- arXiv