Bounds on flavor gauge bosons from precision electroweak data

Journal Article · Tue Feb 01 04:00:00 EST 2000 · Physical Review. D, Particles Fields

DOI:https://doi.org/10.1103/PhysRevD.61.035009· OSTI ID:20215263

Burdman, Gustavo ^[1]; Chivukula, R Sekhar ^[2]; Evans, Nick ^[3]

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1. Department of Physics, University of Wisconsin, Madison, Wisconsin 53706 (United States)
2. Department of Physics, Boston University, Boston, Massachusetts 02215 (United States)
3. Department of Physics, University of Southampton, Southampton, S017 1BJ, (United Kingdom)

Gauged flavor symmetries at low energies have been proposed in models of dynamical electroweak symmetry breaking and fermion mass generation. The massive flavor gauge bosons give rise to corrections to precisely measured electroweak quantities. We perform a fit to the collider electroweak data and place indirect limits on such new physics. In particular we study several models from the literature: universal coloron, chiral top color, chiral quark family symmetry, SU(9) and SU(12) chiral flavor symmetry. The 95% exclusion limits on the mass of the heavy gauge bosons for these models, at their critical coupling for chiral symmetry breaking, typically lie between 1 and 3 TeV. We discuss the robustness of these bounds with respect to changes in Higgs boson mass, b-quark asymmetry data, the SLD left right asymmetry data, or additional new physics. (c) 2000 The American Physical Society.

• OSTI ID: 20215263
• Journal Information: Physical Review. D, Particles Fields, Journal Name: Physical Review. D, Particles Fields Journal Issue: 3 Vol. 61; ISSN PRVDAQ; ISSN 0556-2821
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
B QUARKS
CHIRAL SYMMETRY
EXPERIMENTAL DATA
FLAVOR MODEL
HIGGS BOSONS
INTERMEDIATE BOSONS
MASS
SU-9 GROUPS
SYMMETRY BREAKING
THEORETICAL DATA