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Title: Effective action of softly broken supersymmetric theories

We study the renormalization of (softly) broken supersymmetric theories at the one loop level in detail. We perform this analysis in a superspace approach in which the supersymmetry breaking interactions are parametrized using spurion insertions. We comment on the uniqueness of this parametrization. We compute the one loop renormalization of such theories by calculating superspace vacuum graphs with multiple spurion insertions. To perform this computation efficiently we develop algebraic properties of spurion operators, that naturally arise because the spurions are often surrounded by superspace projection operators. Our results are general apart from the restrictions that higher super covariant derivative terms and some finite effects due to noncommutativity of superfield dependent mass matrices are ignored. One of the soft potentials induces renormalization of the Kaehler potential.
Authors:
 [1] ;  [2]
  1. Institut fuer Theoretische Physik, Universitaet Heidelberg, Philosophenweg 16 und 19, D-69120 Heidelberg (Germany) and Shanghai Institute for Advanced Study, University of Science and Technology of China, 99 Xiupu Rd, Pudong, Shanghai 201315 (China)
  2. Abdus Salam ICTP, Strada Costiera 11, I-34014 Trieste (Italy) and Department of Physics, University of Utah, 115 S 1400 E, 201, Salt Lake City, Utah 84112-0830 (United States)
Publication Date:
OSTI Identifier:
21011095
Resource Type:
Journal Article
Resource Relation:
Journal Name: Physical Review. D, Particles Fields; Journal Volume: 75; Journal Issue: 4; Other Information: DOI: 10.1103/PhysRevD.75.045002; (c) 2007 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; ACTION INTEGRAL; CALCULATION METHODS; POTENTIALS; PROJECTION OPERATORS; RENORMALIZATION; SPURIONS; SUPERSYMMETRY; SYMMETRY BREAKING