Multi-scalar-singlet extension of the standard model - The case for dark matter and an invisible Higgs boson

被引：74

作者：

Drozd, A. ^{[1
]}

Grzadkowski, B. ^{[1
]}

Wudka, Jose ^{[2
]}

机构：

[1] Univ Warsaw, Inst Theoret Phys, PL-00681 Warsaw, Poland

[2] Univ Calif Riverside, Dept Phys, Riverside, CA 92521 USA

来源：

JOURNAL OF HIGH ENERGY PHYSICS | 2012年 / 04期

关键词：

Cosmology of Theories beyond the SM; Beyond Standard Model; Higgs Physics; CONSTRAINTS;

D O I：

10.1007/JHEP04(2012)006

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 consider a simple extension of the Standard Model by the addition of N real scalar gauge singlets (phi) over right arrow that are candidates for Dark Matter. By collecting theoretical and experimental constraints we determine the space of allowed parameters of the model. The possibility of ameliorating the little hierarchy problem within the multi-singlet model is discussed. The Spergel-Steinhardt solution of the Dark Matter density cusp problem is revisited. It is shown that fitting the recent CRESST-II data for Dark Matter nucleus scattering implies that the standard Higgs boson decays predominantly into pairs of Dark Matter scalars. It that case discovery of the Higgs boson at LHC and Tevatron is impossible. The most likely mass of the dark scalars is in the range 15 GeV less than or similar to m(phi) less than or similar to 50 GeV with BR(h -> (phi) over right arrow(phi) over right arrow) up to 96%.

引用

页数：27

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