Gauge coupling unification in the minimal supersymmetric standard model plus five flavors

Journal Article · Wed Apr 01 00:00:00 EDT 2009 · Physical Review. D, Particles Fields

DOI:https://doi.org/10.1103/PHYSREVD.79.075009· OSTI ID:21308200

Jones, Jeff L ^[1]

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1. Department of Physics SCIPP, University of California, Santa Cruz, California 95064 (United States)

We investigate gauge coupling unification at 2-loops for theories with 5 extra vectorlike SU(5) fundamentals added to the minimal supersymmetric standard model (MSSM). This is a borderline case where unification is only predicted in certain regions of parameter space. We establish a lower bound on the scale for the masses of the extra flavors, as a function of the sparticle masses. Models far outside of the bound do not predict unification at all (but may be compatible with unification), and models outside but near the boundary cannot reliably claim to predict it with an accuracy comparable to the MSSM prediction. Models inside the boundary can work just as well as the MSSM.

• OSTI ID: 21308200
• Journal Information: Physical Review. D, Particles Fields, Vol. 79, Issue 7; Other Information: DOI: 10.1103/PhysRevD.79.075009; (c) 2009 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); ISSN 0556-2821
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
ACCURACY
COUPLING
FLAVOR MODEL
FORECASTING
GAUGE INVARIANCE
MASS
SPACE
STANDARD MODEL
SU-5 GROUPS
SUPERSYMMETRY