One Loop Predictions of the Finely Tuned SSM
6/3/2004
69 citations (65 excluding self-citations). One of the first phenomenological analyses of split supersymmetry, predicting the Higgs mass range that was later confirmed by the 125 GeV discovery.
The Key Idea
Split supersymmetry, proposed by Arkani-Hamed and Dimopoulos in 2004, abandons naturalness as a guide and raises scalar superpartner masses to very high scales while keeping gauginos light to preserve gauge coupling unification and dark matter. The paper computes the one-loop running of gaugino couplings, the μ parameter, gaugino masses, and the Higgs quartic coupling in this framework. The Higgs mass prediction of 130-170 GeV for scalar masses above 106 GeV was notably consistent with the subsequent discovery at 125 GeV — at the lower end of the predicted range, corresponding to a SUSY breaking scale around 106-108 GeV. The paper also shows that precision measurements of gaugino coupling relationships could determine the SUSY breaking scale, providing a way to test the model even without directly producing the heavy scalars.
Impact
Together with “Limits on Split Supersymmetry from Gluino Cosmology” and “Stopping Gluinos,” this paper is part of a trio that explored the phenomenological and cosmological consequences of split SUSY — one of the most debated theoretical ideas of the 2000s.
Recollections
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