Peccei–Quinn symmetric pure gravity mediation

Jason L. Evans, Masahiro Ibe, Keith A. Olive, Tsutomu T. Yanagida

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12 Scopus citations


Successful models of pure gravity mediation (PGM) with radiative electroweak symmetry breaking can be expressed with as few as two free parameters, which can be taken as the gravitinomass and tan β. Thesemodels easily support a 125–126 GeVHiggs mass at the expense of a scalar spectrum in the multi-TeV range and a much lighter wino as the lightest supersymmetric particle. In these models, it is also quite generic that the Higgs mixing mass parameter, μ, which is determined by theminimization of the Higgs potential is also in the multi-TeV range. For μ > 0, the thermal relic density of winos is too small to account for the darkmatter. The same is true for μ < 0 unless the gravitinomass is of order 500 TeV. Here, we consider the origin of a multi-TeV μ parameter arising from the breakdown of a Peccei–Quinn (PQ) symmetry. A coupling of the PQ-symmetry breaking field, P, to the MSSM Higgs doublets, naturally leads to a value of μ ∼(P)2/MP ∼ O(100) TeV and of the order that is required in PGM models. In this case, axions make up the dark matter or some fraction of the dark matter with the remainder made up from thermal or non-thermal winos. We also provide solutions to the problem of isocurvature fluctuations with axion dark matter in this context.

Original languageEnglish (US)
Article number2931
JournalEuropean Physical Journal C
Issue number7
StatePublished - 2014

Bibliographical note

Funding Information:
The work of J.E. and K.A.O. was supported in part by DOE grant DE-FG02-94ER-40823 at the University of Minnesota. This work is also supported by Grant-in-Aid for Scientific research from the Ministry of Education, Science, Sports, and Culture (MEXT), Japan, No. 22244021 (T.T.Y.), No. 24740151 (M.I.), and also by the World Premier International Research Center Initiative (WPI Initiative), MEXT, Japan.

Publisher Copyright:
© The Author(s) 2014.


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