Critical Instability as an Origin of Large Isospin Breaking : Particles and Fields

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概要

• 論文の詳細を見る

• Critical instability, as implied by the fine tuning of a 4-fermi coupling constant, is proposed as to the origin of the large isospin breaking in the third generation quark masses. We suggest two possible scenarios with new physics beginning at scales Λ〜20 TeV or Λ〜10^<16>-l0^<19> GeV. In the low Λ scenario, a fourth generation is necessary and its isodoublet is naturally predicted to be almost mass degenerate. The high Λ scenario is discussed in the framework of the E_6 GUT. We also give a formula describing how the critical value of the 4-fermi coupling is shifted by the presence of general gauge interactions.

• 理論物理学刊行会の論文
• 1991-06-25

著者

• Kugo T

  Kyoto Univ.

• BANDO Masako

  Physics Division, Aichi University

• KUGO Taichiro

  Department of Physics, Kyoto University

• 九後 汰一郎

  Department of Physics, Kyoto University

• Bando Masako

  Physics Division Aichi University

• 九後 汰一郎

  京大 理

• Kugo Taichiro

  Department Of Physics Kyoto University

• SUEHIRO Kazuhiko

  Department of Physics, Kyoto University

• Suehiro K

  Department Of Physics Hokkaido University

• Suehiro Kazuhiko

  Department Of Physics Kyoto University

• 九後 汰一郎

  Kyoto Univ. Kyoto Jpn

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