AUTHOR=Bae Kyu J., Baer Howard A., Lessa Andre , Serce Hasan 

TITLE=Mixed axion-wino dark matter

JOURNAL=Frontiers in Physics

VOLUME=3

YEAR=2015

URL=https://www.frontiersin.org/journals/physics/articles/10.3389/fphy.2015.00049

DOI=10.3389/fphy.2015.00049

ISSN=2296-424X

ABSTRACT=<p>A variety of supersymmetric models give rise to a split mass spectrum characterized by very heavy scalars but sub-TeV gauginos, usually with a wino-like LSP. Such models predict a thermally-produced underabundance of wino-like WIMP dark matter so that non-thermal DM production mechanisms are necessary. We examine the case where theories with a wino-like LSP are augmented by a Peccei-Quinn sector including an axion-axino-saxion supermultiplet in either the SUSY KSVZ or SUSY DFSZ models and with/without saxion decays to axions/axinos. We show allowed ranges of PQ breaking scale <italic>f</italic><sub><italic>a</italic></sub> for various cases which are generated by solving the necessary coupled Boltzmann equations. We also present results for a model with radiatively-driven naturalness but with a wino-like LSP.</p>