Abstract
Recently the DiracNMSSM has been proposed as possible solution to reduce the fine tuning in supersymmetry. We determine the degree of fine tuning needed in the DiracNMSSM with and without non-universal gaugino masses and compare it with the fine tuning in the GNMSSM. To apply reasonable cuts on the allowed parameter regions we perform a precise calculation of the Higgs mass in the DiracNMSSM. In addition, we include the limits from direct SUSY searches, dark matter abundance and direct searches. We find that both models are comparable in terms of fine tuning, with the minimal fine tuning in the GNMSSM slightly smaller.
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Kaminska, A., Ross, G.G., Schmidt-Hoberg, K. et al. A precision study of the fine tuning in the DiracNMSSM. J. High Energ. Phys. 2014, 153 (2014). https://doi.org/10.1007/JHEP06(2014)153
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DOI: https://doi.org/10.1007/JHEP06(2014)153