Decoupling heavy sparticles in Effective SUSY scenarios: unification, Higgs masses and tachyon bounds
Abstract
Using two-loop renormalization group equations implementing the decoupling of heavy scalars, Effective SUSY scenarios are studied in the limit in which there is a single low energy Higgs field. Gauge coupling unification is shown to hold with similar or better precision than in standard MSSM scenarios. b-τ unification is examined, and Higgs masses are computed using the effective potential, including two-loop contributions from scalars. A 125 GeV Higgs is compatible with stops/sbottoms at around 300 GeV with non-universal boundary conditions at the scale of the heavy sparticles if some of the trilinear couplings at this scale take values of the order of 1-2 TeV; if more constrained boundary conditions inspired by msugra or gauge mediation are set at a higher scale, heavier colored sparticles are required in general. Finally, since the decoupled RG flow for third-generation scalar masses departs very significantly from the MSSM overline {{DR}} one, tachyon bounds for light scalars are revisited and shown to be relaxed by up to a TeV or more.
- Publication:
-
Journal of High Energy Physics
- Pub Date:
- June 2012
- DOI:
- 10.1007/JHEP06(2012)080
- arXiv:
- arXiv:1204.2645
- Bibcode:
- 2012JHEP...06..080T
- Keywords:
-
- Supersymmetry Phenomenology;
- High Energy Physics - Phenomenology
- E-Print:
- 35 pages, 17 figures. v2: Updated some scans, allowing for changes in sign of some parameters, minor improvements. v3: Typos corrected in formulae in the appendices, added some clarifying remarks about flavor mixing being ignored