Dynamical Symmetry Breaking and the Top Quark Mass
Sep, 198915 pages
Published in:
- Phys.Rev.D 41 (1990) 219
Report number:
- BNL-43230
Citations per year
Abstract: (APS)
Dynamical symmetry breaking by fermion condensates is assumed to be the source of gauge-boson masses in the SU(3)C×SU(2)L×U(1) model. For the minimal case of tt¯ condensation alone, the predicted mt ranges from about 98 to 450 GeV as the scale of "new physics," responsible for mt, Λ, goes from ∞ to ∼1 TeV. The lighter values, mt≲200 GeV, all correspond to "great desert" scenarios with Λ≳mPlanck≃2×1019 GeV. Including a fourth generation of fermion condensates can lower mt. In the case of maximal t−t′ mixing, we find mt≃mt′≃(32)mb′ with mt ranging from about 90 to 250 GeV, and mt≃140 GeV for Λ≃1015−1019 GeV. For smaller mixing, mt′ is lowered and mb′ approaches mt≲200. We speculate as to how, using strong-coupling unitarity conditions, one might have Λ GeV with Λ far below mPlanck. Phenomenological constraints and consequences are also discussed.- gauge field theory: SU(3) x SU(2) x U(1)
- dynamical symmetry breaking
- intermediate boson: mass generation
- mass generation: intermediate boson
- fermion: condensation
- top: mass
- mass: top
- top: octet
- interference: effect
- renormalization group
References(16)
Figures(0)