Can the [rho] parameter allow for the existence of a nondegenerate fourth family
Journal Article
·
· Physical Review Letters; (United States)
- Department of Physics, University of Virginia, Charlottesville, Virginia 22901 (United States)
The question of mass splitting within a doublet of heavy fermions, in particular a fourth generation of quarks and leptons, is reexamined with emphasis on the contribution of possible heavy-fermion vector-meson'' bound states to the [rho] parameter. The heavy-fermion bound states are formed by the exchange of the Higgs boson. We have found that, in the minimal model, the constraint on mass splitting which now also depends on the Higgs boson mass gives rise to some interesting phenomena, including the possibility of having a top-quark mass greater than 180 GeV.
- DOE Contract Number:
- AS05-89ER40518
- OSTI ID:
- 6936366
- Journal Information:
- Physical Review Letters; (United States), Journal Name: Physical Review Letters; (United States) Vol. 69:22; ISSN 0031-9007; ISSN PRLTAO
- Country of Publication:
- United States
- Language:
- English
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