Amelioration of the little hierarchy problem in SU(4){sub c}xSU(2){sub L}xSU(2){sub R}

Journal Article · Sun Nov 15 00:00:00 EST 2009 · Physical Review. D, Particles Fields

DOI:https://doi.org/10.1103/PHYSREVD.80.105002· OSTI ID:21313392

Gogoladze, Ilia; Rehman, Mansoor Ur; Shafi, Qaisar ^[1]

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1. Bartol Research Institute, Department of Physics and Astronomy, University of Delaware, Newark, Delaware 19716 (United States)

The little hierarchy problem encountered in the constrained minimal supersymmetric model can be ameliorated in supersymmetric models based on the gauge symmetry G{sub 422}{identical_to}SU(4){sub c}xSU(2){sub L}xSU(2){sub R}. The standard assumption in the constrained minimal supersymmetric model [and in SU(5) and SO(10)] of universal gaugino masses can be relaxed in SU(4){sub c}xSU(2){sub L}xSU(2){sub R}, and this leads to a significant improvement in the degree of fine-tuning required to implement radiative electroweak breaking in the presence of a characteristic supersymmetry breaking scale of around a TeV. Examples of Higgs and sparticle mass spectra realized with 10% fine-tuning are presented.

• OSTI ID: 21313392
• Journal Information: Physical Review. D, Particles Fields, Vol. 80, Issue 10; Other Information: DOI: 10.1103/PhysRevD.80.105002; (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

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HIGGS BOSONS
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MASS SPECTRA
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SPARTICLES
SU-2 GROUPS
SU-4 GROUPS
SU-5 GROUPS
SUPERSYMMETRY
SYMMETRY BREAKING
TEV RANGE 01-10
WEINBERG-SALAM GAUGE MODEL