Fat branes, orbifolds and doublet-triplet splitting

被引：0
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作者：
Naoyuki Haba
Nobuhito Maru
机构：
[1] University of Tokushima,Institute of Theoretical Physics
[2] RIKEN (The Institute of Physical and Chemical Research),Theoretical Physics Laboratory
来源：
The European Physical Journal C - Particles and Fields | 2004年 / 33卷
关键词：
Gauge Symmetry; Mass Term; Higgs Doublet; Mass Splitting; Proton Stability;
D O I：
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摘要：
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 the Higgs hypermultiplet which explicitly breaks SU(5) gauge symmetry. Depending on the sign of the mass, zero mode Higgs doublets and triplets are localized on 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 the parameters is needed. The proton stability is ensured by locality - without symmetries.
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页码：457 / 461
页数：4
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