Naturally large radiative lepton flavor violating Higgs decay mediated by lepton-flavored dark matter

被引：45

作者：

Baek, Seungwon ^{[1
]}

Kang, Zhaofeng ^{[1
]}

机构：

[1] KIAS, Sch Phys, 85 Hoegiro, Seoul 02455, South Korea

来源：

JOURNAL OF HIGH ENERGY PHYSICS | 2016年 / 03期

基金：

新加坡国家研究基金会;

关键词：

Beyond Standard Model; Higgs Physics; MAJORANA; NONCONSERVATION; MECHANISM; MODEL;

D O I：

10.1007/JHEP03(2016)106

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：

In the standard model (SM), lepton flavor violating (LFV) Higgs decay is absent at renormalizable level and thus it is a good probe to new physics. In this article we study a type of new physics that could lead to large LFV Higgs decay, i.e., a lepton-flavored dark matter (DM) model which is specified by a Majorana DM and scalar lepton mediators. Different from other similar models with similar setup, we introduce both left-handed and right-handed scalar leptons. They allow large LFV Higgs decay and thus may explain the tentative Br(h -> tau mu) similar to 1% experimental results from the LHC. In particular, we find that the stringent bound from tau -> mu gamma can be naturally evaded. One reason, among others, is a large chirality violation in the mediator sector. Aspects of relic density and especially radiative direct detection of the leptonic DM are also investigated, stressing the difference from previous lepton-flavored DM models.

引用

页数：23

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