Implications of LHC searches for Higgs-portal dark matter

By Abdelhak Djouadi, O. Lebedev, Y. Mambrini, J. Quevillon. 2011

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The search for the a Standard Model Higgs boson at the LHC is reaching a critical stage as the possible mass range for the particle has become extremely narrow and some signal at a mass of about 125 GeV is starting to emerge. We study the implications of these LHC Higgs searches for Higgs-portal models of dark matter in a rather model independent way. Their impact on the cosmological relic density and on the direct detection rates are studied in the context of generic scalar, vector and fermionic thermal dark matter particles. Assuming a sufficiently small invisible Higgs decay branching ratio, we find that current data, in particular from the XENON experiment, essentially exclude fermionic dark matter as well as light, i.e. with masses below ≈60 GeV, scalar and vector dark matter particles. Possible observation of these particles at the planned upgrade of the XENON experiment as well in collider searches is discussed.

Subfields: Astronomy and Astrophysics, Nuclear and High Energy Physics

View Paper: https://www.semanticscholar.org/paper/80fc67d22288d4b9da636b98ef0e285acbd1bc83

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Citations in the corpus

Interpreting LHC Higgs results from natural new physics perspective (2012, background): “A number of partly overlapping papers have recently investigated the 125 GeV Higgs-like excess in the context of composite Higgs [16], supersymmetric Higgs [17–28], and multi-Higgs models [29–32]; see also [33–41].”
Composite scalar dark matter (2012, background): “[1–8]), consists in adding to the SM a gauge singlet real scalar η, and assuming that it is stable due to a parity η → −η.”
Implications of unitarity and gauge invariance for simplified dark matter models (2015, methodology): “ider the induced coupling of the SM-like Higgs H 1 ˇhto DM particles L˙ m DM sin 2w h ’ m DM hsv 2(m2 s m2 h ) h : (6.4) For small hs, the resulting direct detection cross section is given by [77] ˙SI N ’ 2 ˇm4 h f2 N m 2 N m 2 DM 2 ( m2 s 2 h ) ; (6.5) where we can neglect an additional contrib”
Physics at a 100 TeV pp collider: Higgs and EW symmetry breaking studies (2016, background): “If then mφ < mH/2 the decay H → φφ contributes to the total Higgs width ΓH and can be probed in searches for invisible Higgs decays [371].”
Constraints on new phenomena via Higgs boson couplings and invisible decays with the ATLAS detector (2015, methodology): “J H E P 1 1 ( 2 0 1 5 ) 2 0 6 the WIMP and nucleons via Higgs boson exchange, σχ−N [19]: scalar S : σS−N = λ 2 hSS m4Nf 2 N 16πm4h(mS +mN ) 2 fermion f : σf−N = λ2hff Λ2 m4Nf 2 Nm 2 f 4πm4h(mf +mN ) 2 (9.3) vector V : σV−N = λ 2 hV V m4Nf 2 N 16πm4h(mV +mN ) 2 , where mN ∼ 0.94 GeV is the nucleon ma”
Higgs portal, fermionic dark matter, and a Standard Model like Higgs at 125 GeV (2012, background): “Using effective field theory we show that for DM with a mass in the range from about 60 GeV to 2 TeV the Higgs portal needs to be parity violating in order to be in agreement with direct detection searches.”
Dark Matter through the Higgs portal (2019, background): “[57], it has been shown that the monojet signature carries a good potential to constrain the Higgs invisible decay branching ratio.”