Neutrino Masses, Anomalous U(1) Gauge Symmetry and Doublet-Triplet Splitting

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概要

• 論文の詳細を見る

• We propose an attractive scenario of grand unified theories in which doublet-triplet splitting is naturally realized in SO(10) unification using the Dimopoulos-Wilczek mechanism. The anomalous U(1)_A gauge symmetry plays an essential role in the doublet-triplet splitting mechanism. It is interesting that the anomalous U(1)_A charges determine the unification scale and mass spectrum of additional particles, as well as the order of the Yukawa couplings of quarks and leptons. For the neutrino sector, bi-maximal mixing angles are naturally obtained, and proton decay via dimension 5 operators is suppressed. It is suggestive that the anomalous U(1)_A gauge symmetry motivated by superstring theory effectively solves the two biggest problems in grand unified theories, the fermion mass hierarchy problem and doublet-triplet splitting problem.

• 理論物理学刊行会の論文
• 2001-08-25

著者

• Maekawa N

  名古屋大学大学院理学研究科

• Maekawa Nobuhiro

  Department Of Anesthesia And Perioperative Medicine Kobe University

• MAEKAWA Nobuhiko

  Department of Physics, Kyoto University

• MAEKAWA Nobuhiro

  Department of Physics. Kyoto University

• MAEKAWA Nobuhiro

  Departinrnt of Physics, Kyoto University

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