Lepton flavor violation in the Simplest Little Higgs model

被引：20

作者：

del Aguila, Francisco ^{[1
]}

Illana, Jose I.

Jenkins, Mark D.

机构：

[1] Univ Granada, CAFPE, E-18071 Granada, Spain

来源：

JOURNAL OF HIGH ENERGY PHYSICS | 2011年 / 03期

关键词：

Higgs Physics; Rare Decays; Beyond Standard Model; SIGNALS; DECAY; CONVERSION; SEESAW; SEARCH; LIMIT; FCNC; MEG; MU;

D O I：

10.1007/JHEP03(2011)080

中图分类号：

O412 [相对论、场论]; O572.2 [粒子物理学];

学科分类号：

摘要：

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.

引用

页数：40

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