Connection of gamma rays, dark matter, and Higgs boson searches at the LHC

被引：96

作者：

Ruiz-Alvarez, J. D. ^{[1
]}

Pires, C. A. de S. ^{[2
]}

Queiroz, Farinaldo S. ^{[2
,3
]}

Restrepo, D. ^{[1
]}

Rodrigues da Silva, P. S. ^{[2
]}

机构：

[1] Univ Antioquia, Inst Fis, Medellin 1226, Colombia

[2] Univ Fed Paraiba, Dept Fis, BR-58051970 Joao Pessoa, Paraiba, Brazil

[3] Fermilab Natl Accelerator Lab, Ctr Particle Astrophys, Batavia, IL 60510 USA

来源：

PHYSICAL REVIEW D | 2012年 / 86卷 / 07期

关键词：

GALACTIC-CENTER; MODEL;

D O I：

10.1103/PhysRevD.86.075011

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

Motivated by the upcoming Higgs analyses, we investigate the importance of the complementarity of the Higgs boson chase on the low-mass weakly interacting massive particle (WIMP) search in direct detection experiments and the gamma-ray emission from the Galactic Center measured by the Fermi-LAT telescope in the context of the SU(3)(c) circle times SU(3)(L) circle times U(1)(N). We obtain the relic abundance, thermal cross section, and the WIMP-nucleon cross section in the low-mass regime and network them with the branching ratios (BRs) of the Higgs boson in the model. We conclude that the Higgs boson search has a profound connection to the dark matter problem in our model, in particular for the case that (M-WIMP < 60 GeV) the BR(H -> 2 WIMPs) greater than or similar to 90%. This scenario could explain the gamma-ray emission from the Galactic Center observed by the Fermi-LAT telescope through the b<(b)over bar> channel with a WIMP in the mass range of 25-45 GeV, while still being consistent with the current limits from XENON100 and CDMSII. However, after the recent LHC measurements concerning the Higgs, this window has been completely forfended, implying that M-WIMP > M-H/2 and, consequently, ruling out any attempt to explain the Fermi-LAT observations, although still offering a region of the parameter space consistent with the current bounds. Lastly, we show that our model has a Standard Model-like Higgs boson for the regime that M-WIMP > M-H/2, by computing the BRs into bb, gamma gamma and tau tau.

引用

页数：10

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