Flavour Structure and Proton Decay in 6D Orbifold GUTs | Zendy

W. Buchmüller | Zendy; Laura Covi | Zendy; David Emmanuel-Costa | Zendy; Sören Wiesenfeldt | Zendy

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Flavour Structure and Proton Decay in 6D Orbifold GUTs

Author(s) -

W. Buchmüller,

Laura Covi,

David Emmanuel-Costa,

Sören Wiesenfeldt

Publication year - 2004

Publication title -

journal of high energy physics

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.998

H-Index - 261

eISSN - 1126-6708

pISSN - 1029-8479

DOI - 10.1088/1126-6708/2004/09/004

Subject(s) - orbifold , proton decay , physics , particle physics , brane , lepton , quark , branching fraction , extra dimensions , zero mode , dimension (graph theory) , supersymmetry , proton , theoretical physics , mathematical physics , nuclear physics , electron , mathematics , pure mathematics

We study proton decay in a supersymmetric {\sf SO(10)} gauge theory in sixdimensions compactified on an orbifold. The dimension-5 proton decay operatorsare forbidden by R-symmetry, whereas the dimension-6 operators are enhanced dueto the presence of KK towers. Three sequential quark-lepton families arelocalised at the three orbifold fixed points, where {\sf SO(10)} is broken toits three GUT subgroups. The physical quarks and leptons are mixtures of thesebrane states and additional bulk zero modes. This leads to a characteristicpattern of branching ratios in proton decay, in particular the suppression ofthe $p\to \m^+K^0$ mode.Comment: 20 pages, 1 figur

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