The minimal SUSY B − L model: from the unification scale to the LHC
| Autor: | Austin Purves, Burt A. Ovrut, Sogee Spinner |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2015 |
| Předmět: |
Physics
Nuclear and High Energy Physics Particle physics 010308 nuclear & particles physics Physics beyond the Standard Model Electroweak interaction High Energy Physics::Phenomenology Supersymmetry 01 natural sciences Supersymmetry breaking Vector boson 0103 physical sciences Higgs boson High Energy Physics::Experiment Symmetry breaking Electroweak scale 010306 general physics |
| Zdroj: | Journal of High Energy Physics |
| Popis: | This paper introduces a random statistical scan over the high-energy initial parameter space of the minimal SUSY B − L model — denoted as the B − L MSSM. Each initial set of points is renormalization group evolved to the electroweak scale — being subjected, sequentially, to the requirement of radiative B − L and electroweak symmetry breaking, the present experimental lower bounds on the B − L vector boson and sparticle masses, as well as the lightest neutral Higgs mass of ∼125 GeV. The subspace of initial parameters that satisfies all such constraints is presented, shown to be robust and to contain a wide range of different configurations of soft supersymmetry breaking masses. The low-energy predictions of each such “valid” point — such as the sparticle mass spectrum and, in particular, the LSP — are computed and then statistically analyzed over the full subspace of valid points. Finally, the amount of fine-tuning required is quantified and compared to the MSSM computed using an identical random scan. The B − L MSSM is shown to generically require less fine-tuninng. |
| Databáze: | OpenAIRE |
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