Little hierarchy in the minimally specified MSSM

We study constrained versions of the minimal supersymmetric model and investigate the hierarchy between the electroweak scale and the scale of superpartners that can be achieved without relying on specifying model parameters by more than one digit. This approach automatically avoids scenarios in which a large hierarchy is obtained by special choices of parameters and yet keeps scenarios that would be otherwise disfavored by various sensitivity measures. We consider models with universal gaugino and scalar masses, models with non-universal Higgs masses or non-universal gaugino masses and focus on scenarios in which all the model parameters are either of the same order or zero at the grand unification scale. We find that the maximal hierarchy between the electroweak scale and stop masses, requiring that model parameters are not specified beyond one digit, ranges from a factor of ∼10−30 for the CMSSM up to ∼300 for models with non-universal Higgs or gaugino masses.


Publication Date:
13 Sept 2018
Date Submitted:
Jul 01 2019
Pagination:
1850145
Citation:
International Journal of Modern Physics A
A33
25
External Resources:




 Record created 2019-07-01, last modified 2019-07-02


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