A Cutoff Constrained by the Oblique Parameters in Electroweak Theory with Two Massless Higgs Doublets
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概要
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Electroweak Theory with two massless Higgs doublets is studied by solving renormalization group equations for coupling constants in one-loop approximation. A cutoff Λ, at which one of quartic couplings in the Higgs potential blows up, is obtained by imposing constraints from the oblique parameter T on the quartic couplings at low energy. We find Λ≃0.52〜8.4 TeV at the Higgs mass M_H=100GeV. The cutoff Λ is at most about 60 TeV even if we take into account the LEP lower bound of M_H≃64GeV. It cannot reach the Planck or GUT scale due to severe experimental constraints. It is impossible in the model to realize a large gauge hierarchy as suggested by Weinberg many years ago.
- 理論物理学刊行会の論文
- 1996-03-25
著者
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TAKENAGA Kazunori
Yukawa Institute for Theoretical Physics, Kyoto University
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TAKENAGA Kazunori
Department of Physics, Kyushu University
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Takenaga Kazunori
Yukawa Institute For Theoretical Physics Kyoto University
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Takenaga Kazunori
The Niels Bohr Institute
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TAKENAGA Kazunori
Department of Physics, Osaka University
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