Supersymmetric partners of oblique corrections

Emanuel Katz, Lisa Randall, Shufang Su

Research output: Contribution to journalArticle

36 Scopus citations

Abstract

We discuss the violation of the equality of the gauge coupling and gaugino coupling in the presence of soft supersymmetry breaking. Although this is a hard supersymmetry breaking effect, there are finite contributions to this difference that can be determined as a function of the soft supersymmetry breaking masses. The largest sources of this difference are the "super-oblique" corrections, which can be enhanced by a multiplicity factor and a logarithm of the soft supersymmetry breaking mass. This is to be contrasted to standard oblique corrections to the electroweak sector, which decouple for large supersymmetry breaking. We show that these parameters can be relatively large, particularly in models of supersymmetry breaking motivated by solving the supersymmetric flavor problem. We also perform a detailed study of the non-oblique corrections for the example of squark decay. We find that they can be significant, and should be accounted for in the theoretical prediction.

Original languageEnglish (US)
Pages (from-to)3-28
Number of pages26
JournalNuclear Physics B
Volume536
Issue number1-2
DOIs
StatePublished - Dec 21 1998
Externally publishedYes

Keywords

  • Gauge coupling
  • Oblique and non-oblique corrections
  • Supersymmetry
  • Yukawa coupling

ASJC Scopus subject areas

  • Nuclear and High Energy Physics

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