In Calabi-Yau string compactification, it is pointed out that there exists a new type of SU(5)×U(1)^2 model (the aligned SU(5)×U(1)^2 model) in which the SU(5) differs from the standard SU(5) and also from the flipped SU(5). With the aid of the discrete symmetry suggested from Gepner model, we construct a simple and phenomenologically interesting three-generation model with the aligned SU(5)×U(1)^2 gauge symmetry. The triplet-doublet splitting problem can be solved. It is also found that there is a realistic solution for solar neutrino problem and for the μ-problem. At low energies this model is in accord with the minimal supersymmetric standard model except for the existence of singlet fields with masses of O(1)TeV.
雑誌名
Progress of theoretical physics
巻
94
号
2
ページ
233 - 247
発行年
1995
出版者
理論物理学刊行会
ISSN
0033-068X
書誌情報
Progress of theoretical physics. 1995, 94(2), p. 233-247.
The Aligned SU(5) x U(1)^2 model.
matsudam020.pdf
(181.31KB)
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