Determining the structure of supersymmetry breaking with renormalization group invariants

Journal Article · Fri Oct 01 00:00:00 EDT 2010 · Physical Review. D, Particles Fields

DOI:https://doi.org/10.1103/PHYSREVD.82.075005· OSTI ID:21432316

Carena, Marcela ^[1]; Draper, Patrick ^[2]; Shah, Nausheen R ^[1]; Wagner, Carlos E. M. ^[2]

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1. Fermi National Accelerator Laboratory, P. O. Box 500, Batavia, Illinois 60510 (United States)
2. Enrico Fermi Institute, University of Chicago, Chicago, Illinois 60637 (United States)

If collider experiments demonstrate that the minimal supersymmetric standard model (MSSM) is a good description of nature at the weak scale, the experimental priority will be the precise determination of superpartner masses. These masses are governed by the weak scale values of the soft supersymmetry-breaking (SUSY-breaking) parameters, which are in turn highly dependent on the SUSY-breaking scheme present at high scales. It is therefore of great interest to find patterns in the soft parameters that can distinguish different high-scale SUSY-breaking structures, identify the scale at which the breaking is communicated to the visible sector, and determine the soft breaking parameters at that scale. In this work, we demonstrate that 1-loop renormalization group invariant quantities present in the MSSM may be used to answer each of these questions. We apply our method first to generic flavor-blind models of SUSY breaking, and then we examine in detail the subset of these models described by general gauge mediation and the constrained MSSM with nonuniversal Higgs masses. As renormalization group invariance generally does not hold beyond leading-log order, we investigate the magnitude and direction of the 2-loop corrections. We find that with superpartners at the TeV scale, these 2-loop effects are either negligible, or they are of the order of optimistic experimental uncertainties and have definite signs, which allows them to be easily accounted for in the overall uncertainty.

• OSTI ID: 21432316
• Journal Information: Physical Review. D, Particles Fields, Vol. 82, Issue 7; Other Information: DOI: 10.1103/PhysRevD.82.075005; (c) 2010 American Institute of Physics; ISSN 0556-2821
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
CORRECTIONS
FLAVOR MODEL
HIGGS BOSONS
HIGGS MODEL
MASS
RENORMALIZATION
STANDARD MODEL
SUPERSYMMETRY
SYMMETRY BREAKING
TEV RANGE
BOSONS
COMPOSITE MODELS
ELEMENTARY PARTICLES
ENERGY RANGE
FIELD THEORIES
GRAND UNIFIED THEORY
MATHEMATICAL MODELS
PARTICLE MODELS
POSTULATED PARTICLES
QUANTUM FIELD THEORY
QUARK MODEL
SYMMETRY
UNIFIED GAUGE MODELS