Renormalization Group Analysis of Supersymmetric Particle Interactions

Journal Article · Wed Feb 10 04:00:00 EST 2010 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.3327604· OSTI ID:21371517

Box, Andrew D ^[1]

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1. Department of Physics and Astronomy, University of Oklahoma, Norman, OK 73019 (United States)

We reexamine the renormalization group equations (RGEs) for the dimensionless and dimensionful parameters of the Minimal Supersymmetric Standard Model (MSSM), incorporating 1-loop thresholds. The inclusion of these thresholds necessarily results in splitting between dimen-sionless couplings which are equal at the tree level. Assuming that the SUSY-breaking mechanism does not introduce new intergenerationalcouplings, we present the most general form for high-scale, soft-SUSY-breaking (SSB) parameters. With this as our boundary condition, we consider illustrative examples of numerical solutions to the RGEs. In a supersymmetric grand unified theory with the scale of SUSY scalars split from that of gauginos and higgsinos, we find that the gaugino mass unification relation may be violated to the order of 10%. Further, we consider the rate for the flavor violating decay of the lightest stop to charm plus neutralino. We find that using the complete RGE solution as opposed to the commonly used 'single-step' integration of the RGEs can qualitatively change the picture of event-topologies from top-squark pair production, or from gluino production if gluino to stop plus top is the dominant gluino decay mode.

• OSTI ID: 21371517
• Journal Information: AIP Conference Proceedings, Journal Name: AIP Conference Proceedings Journal Issue: 1 Vol. 1200; ISSN APCPCS; ISSN 0094-243X
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
BOUNDARY CONDITIONS
COMPOSITE MODELS
COUPLING
DECAY
ELEMENTARY PARTICLES
FERMIONS
FIELD THEORIES
FLAVOR MODEL
GRAND UNIFIED THEORY
INTERACTIONS
MASS
MATHEMATICAL MODELS
MATHEMATICAL SOLUTIONS
NUMERICAL SOLUTION
PAIR PRODUCTION
PARTICLE DECAY
PARTICLE MODELS
PARTICLE PRODUCTION
POSTULATED PARTICLES
QUANTUM FIELD THEORY
QUARK MODEL
QUARKS
RENORMALIZATION
REST MASS
SCALARS
SPARTICLES
STANDARD MODEL
SUPERSYMMETRY
SYMMETRY
SYMMETRY BREAKING
UNIFIED GAUGE MODELS