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arXiv · 1603.09347

On the MSSM Higgsino mass and fine tuning

Graham G. Ross·Kai Schmidt-Hoberg·Florian Staub
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Abstract

It is often argued that low fine tuning in the MSSM necessarily requires a rather light Higgsino. In this note we show that this need not be the case when a more complete set of soft SUSY breaking mass terms are included. In particular an Higgsino mass term, that correlates the $μ-$term contribution with the soft SUSY-breaking Higgsino masses, significantly reduces the fine tuning even for Higgsinos in the TeV mass range where its relic abundance means it can make up all the dark matter.

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Graham G. Ross, Kai Schmidt-Hoberg, Florian Staub. 2016-03-30. On the MSSM Higgsino mass and fine tuning. https://doi.org/10.1016/j.physletb.2016.05.053

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