micrOMEGAs4.1: Two dark matter candidates

We show that the recently reported anomalies in b → sµ + µ − transitions, as well as the longstanding gµ − 2 discrepancy, can be addressed simultaneously by a new massive abelian gauge boson with loop-induced coupling to muons. Such a scenario typically leads to a stable dark matter candidate with a thermal relic density close to the observed value. Dark matter in our model couples dominantly to leptons, hence signals in direct detection experiments lie well below the current sensitivity. The LHC, in combination with indirect detection searches, can test this scenario through distinctive signatures with muon pairs and missing energy.

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“…IV are satisfied. We then compute the resulting relic density with micrOMEGAs [50]. As shown in FIG.…”

Section: Dark Matter Relic Abundancementioning

confidence: 99%

Dark matter relic from muon anomalies

2015

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“…To solve the differential equations (3.1), we use the ready-made function [38,39] embeded in the micrOMEGAs [40] for computing the stiff equations eq. (3.1).…”

Section: Numerical Solutions and Resultsmentioning

confidence: 99%

Dark matter relic abundance and light sterile neutrinos

Tang

Zhu

2017

J. High Energ. Phys.

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In this paper, we calculate the relic abundance of the dark matter particles when they can annihilate into sterile neutrinos with the mass 100 GeV in a simple model. Unlike the usual standard calculations, the sterile neutrino may fall out of the thermal equilibrium with the thermal bath before the dark matter freezes out. In such a case, if the Yukawa coupling y N between the Higgs and the sterile neutrino is small, this process gives rise to a larger Ω DM h 2 so we need a larger coupling between the dark matter and the sterile neutrino for a correct relic abundance.

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“…In our analysis, we use the spectrum calculator NMSSMTools 4.7.0 [26,27] and also use the decay width calculator NMSDECAY [28]. In the table, we also show the properties of the dark matter which are calculated using MicrOMEGAs4.1.8 [29,30] (see next section). Note that we take M 1 = M 2 = 1.5 TeV in both benchmark points, and the bino and winos are decoupled enough.…”

Section: Jhep01(2016)030mentioning

confidence: 99%

ATLAS on-Z excess via gluino-Higgsino-singlino decay chains in the NMSSM

Harigaya

Ibe

Kitahara

2016

J. High Energ. Phys.

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Recently the ATLAS experiment has reported 3.0 σ excess in an on-Z signal region in searches for supersymmetric particles. We find that the next-to-minimal supersymmetric standard model can explain this excess by the production of gluinos which mainly decay viag → gχ 0 2,3 → gZχ 0 1 whereχ 0 2,3 andχ 0 1 are the Higgsino and the singlinolike neutralinos, respectively. We show that the observed dark matter density is explained by the thermal relic density of the singlino-like neutralino, simultaneously. We also discuss the searches for the Higgs sector of this scenario at the Large Hadron Collider.

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micrOMEGAs4.1: Two dark matter candidates

Cited by 426 publications

References 26 publications

Dark matter relic from muon anomalies

Dark matter relic from muon anomalies

Dark matter relic abundance and light sterile neutrinos

ATLAS on-Z excess via gluino-Higgsino-singlino decay chains in the NMSSM

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