Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
1998-10-19
Nucl.Phys. B544 (1999) 503-519
Physics
High Energy Physics
High Energy Physics - Phenomenology
26 pages, 1 figure, Latex
Scientific paper
10.1016/S0550-3213(99)00037-1
We study the sparticle spectroscopy and electroweak breaking of theories where supersymmetry is broken by compactification (Scherk-Schwarz mechanism) at a TeV. The evolution of the soft terms above the compactification scale and the resulting sparticle spectrum are very different from those of the usual MSSM and gauge mediated theories. This is traced to the softness of the Scherk-Schwarz mechanism which leads to scalar sparticle masses that are only logarithmically sensitive to the cutoff starting at two loops. As a result, squarks and sleptons are naturally an order of magnitude lighter than gauginos. In addition, the mechanism is very predictive and the sparticle spectrum depends on just two new parameters. A significant advantage of this mechanism relative to gauge mediation is that a Higgsino mass $\mu\sim M_susy$ is automatically generated when supersymmetry is broken. Our analysis applies equally well to theories where the cutoff is near a TeV or $M_{Pl}$ or some intermediate scale. We also use these observations to show how we may obtain compactification radii which are hierarchically larger than the fundamental cutoff scale.
Antoniadis Ignatios
Dimopoulos Savas
Pomarol Alex
Quiros Mariano
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