Fermion mass hierarchy in six-dimensional SO(10) grand unified theory on a T2/Z2 orbifold

N. Haba, T. Kondo, Y. Shimizu

Research output: Contribution to journalArticle

20 Citations (Scopus)

Abstract

We suggest a simple supersymmetric SO(10) grand unified theory in 6 dimensions which produces the suitable fermion mass hierarchies. The 5th- and 6th-dimensional coordinates are compactified on a T2/Z2 orbifold. The gauge and Higgs fields propagate in 6 dimensions while ordinal chiral matter fields are localized in 4 dimensions. The orbifolding and boundary conditions realize the gauge symmetry reduction, SU(3)C × SU(2)L × U(1)Y × U(1)x, and the triplet-doublet mass splitting. We introduce extra three sets of vector-like heavy fields: two sets propagate in 6 dimensions and chiral fields which couple to them are defined as the 1st generation, and one set propagates in 5 dimensions and chiral fields which couple to them are defined as the 2nd generation. The suitable fermion mass hierarchies are generated by integrating out these vector-like heavy fields.

Original languageEnglish
Pages (from-to)245-254
Number of pages10
JournalPhysics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Volume531
Issue number3-4
DOIs
Publication statusPublished - 2002 Apr 11

ASJC Scopus subject areas

  • Nuclear and High Energy Physics

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