期刊
JOURNAL OF HIGH ENERGY PHYSICS
卷 -, 期 3, 页码 -出版社
SPRINGER
DOI: 10.1007/JHEP03(2011)080
关键词
Higgs Physics; Rare Decays; Beyond Standard Model
资金
- Spanish MICINN [FPA2006-05294]
- Junta de Andalucia [FQM 101, FQM 03048]
- European Community's Marie-Curie Research Training Network [MRTN-CT-2006-035505]
- MICINN FPU
The flavor sector of Little Higgs models based on product groups, notably the Littlest Higgs with T parity (LHT), has been extensively studied and some amount of fine tuning was found to be required to meet the experimental constraints. However, no such attention has been paid to other classes of models. Here we analyze the phenomenology of flavor mixing in the lepton sector of a simple group model, the Simplest Little Higgs (SLH). We obtain the Feynman rules of the SLH in the 't Hooft-Feynman gauge up to the necessary order and calculate the leading contributions to the rare processes mu -> e gamma, mu -> ee (e) over bar and mu - e conversion in nuclei. We find results comparable to those of the LHT model, because in both cases they arise at the one - loop level. These require the flavor alignment of the Yukawa couplings of light and heavy leptons at the per cent level or an effective scale of around 10 TeV.
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