Lepton-flavored scalar dark matter with minimal flavor violation

被引：45

作者：

Lee, Chao-Jung ^{[1
]}

Tandean, Jusak

机构：

[1] Natl Taiwan Univ, Dept Phys, Taipei 106, Taiwan

来源：

JOURNAL OF HIGH ENERGY PHYSICS | 2015年 / 04期

关键词：

Cosmology of Theories beyond the SM; Discrete and Finite Symmetries; Neutrino Physics; Higgs Physics; E(+)E(-) COLLISIONS; MISSING ENERGY; MULTIPHOTON PRODUCTION; ROOT-S; PHOTON EVENTS; SINGLE; MASS; MODEL; CANDIDATES; PHYSICS;

D O I：

10.1007/JHEP04(2015)174

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：

We explore scalar dark matter that is part of a lepton flavor triplet satisfying symmetry requirements under the hypothesis of minimal flavor violation. Beyond the standard model, the theory contains in addition three right-handed neutrinos that participate in the seesaw mechanism for light neutrino mass generation. The dark-matter candidate couples to standard-model particles via Higgs-portal renormalizable interactions as well as to leptons through dimension-six operators, all of which have minimal flavor violation built-in. We consider restrictions on the new scalars from the Higgs boson measurements, observed relic density, dark-matter direct detection experiments, LEP II measurements on e (+) e (-) scattering into a photon plus missing energy, and searches for flavor-violating lepton decays. The viable parameter space can be tested further with future data. Also, we investigate the possibility of the new scalars' couplings accounting for the tentative hint of Higgs flavor-violating decay h -> mu tau recently detected in the CMS experiment. They are allowed by constraints from other Higgs data to produce a rate of this decay roughly compatible with the CMS finding.

引用

页数：26

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