2003/06/30 by Naoyuki Haba, Nobuhito Maru
Physics and Astronomy · #Black Holes and Theoretical Physics #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions #hep-ph
paper · pdf · doi:10.1140/epjc/s2003-01578-4
published as Eur.Phys.J. C33 (2004) 457-461 · 10 pages, No figures, LaTeX, a 4 point interaction in the superpotential (4) is replaced with a mass term of Higgs hypermultiplet. Following this correction, the scenario is changed but the results unchanged
arxiv created 2003/09/17 · openalex publication_date 2004/03/01 · arxiv updated 2009/11/30 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
A simple higher dimensional mechanism of the doublet-triplet splitting is presented in a five dimensional supersymmetric SU(5) GUT on S1/Z2. The splitting of multiplets is realized by a mass term of Higgs hypermultiplet which explicitly breaks SU(5) gauge symmetry. Depending on the sign of mass, zero mode Higgs doublets and triplets are localized on the either side of the fixed points. The mass splitting is realized due to the difference of magnitudes of the overlap with a brane localized or a bulk singlet field. No unnatural fine-tuning of parameters is needed. The proton stability is ensured by locality \em without symmetries. As well as a conventional mass splitting solution, it is shown that the weak scale Higgs triplet is consistent with the proton stability. This result might provide an alternative signature of GUT in future collider experiments.