Effective action of softly broken supersymmetric theories

Journal Article · Thu Feb 15 04:00:00 EST 2007 · Physical Review. D, Particles Fields

DOI:https://doi.org/10.1103/PHYSREVD.75.045002· OSTI ID:21011095

Nibbelink, Stefan Groot ^[1]; Nyawelo, Tino S ^[2]

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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)

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.

• OSTI ID: 21011095
• Journal Information: Physical Review. D, Particles Fields, Journal Name: Physical Review. D, Particles Fields Journal Issue: 4 Vol. 75; ISSN PRVDAQ; ISSN 0556-2821
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
ACTION INTEGRAL
CALCULATION METHODS
POTENTIALS
PROJECTION OPERATORS
RENORMALIZATION
SPURIONS
SUPERSYMMETRY
SYMMETRY BREAKING