Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2001-02-15
Nucl.Phys.Proc.Suppl.101:357-365,2001
Physics
High Energy Physics
High Energy Physics - Phenomenology
9 pages, 1 figure (included). Requires espcrc2.sty (included). Talk given at the 30 Years of Supersymmetry workshop, Oct. 2000
Scientific paper
10.1016/S0920-5632(01)01521-3
While supersymmetric extensions of the Standard Model can be fully described in terms of explicitly broken global supersymmetry, this description is only effective. Once related to spontaneous breaking in a more fundamental theory, the effective parameters translate to functions of two distinct scales, the scale of spontaneous supersymmetry breaking and the scale of its mediation to the standard-model fields. The scale dependence will be written explicitly and the full spectrum of supersymmetry breaking operators which emerges will be explored. It will be shown that, contrary to common lore, scale-dependent operators can play an important role in determining the phenomenology. For example, theories with low-energy supersymmetry breaking, such as gauge mediation, may correspond to a scalar potential which is quite different than in theories with high-energy supersymmetry breaking, such as gravity mediation. As a concrete example, the Higgs mass prediction will be discussed in some detail and its upper bound will be shown to be sensitive to the supersymmetry breaking scale.
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