TY - JOUR

T1 - Fermion mass hierarchy in six-dimensional SO(10) grand unified theory on a T2/Z2 orbifold

AU - Haba, N.

AU - Kondo, T.

AU - Shimizu, Y.

N1 - Funding Information:
We would like to thank H. Murayama and Y. Nomura for useful discussions. This work is supported in part by the Grant-in-Aid for Science Research, Ministry of Education, Culture, Sports, Science and Technology, of Japan (No. 12740146, No. 13001292).

PY - 2002/4/11

Y1 - 2002/4/11

N2 - 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.

AB - 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.

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U2 - 10.1016/S0370-2693(02)01503-4

DO - 10.1016/S0370-2693(02)01503-4

M3 - Article

AN - SCOPUS:0037061834

VL - 531

SP - 245

EP - 254

JO - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics

JF - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics

SN - 0370-2693

IS - 3-4

ER -