Linking the Galactic Center excess to invisible Higgs boson decays in the NMSSM

Abstract : The galactic center excess of gamma ray photons can be naturally explained by light Majorana fermions in combination with a pseudoscalar mediator. The NMSSM provides exactly these ingredients. We show that for neutralinos with a significant singlino component the galactic center excess can be linked to invisible decays of the Standard-Model-like Higgs at the LHC. We find predictions for invisible Higgs branching ratios in excess of 50 percent, easily accessible at the LHC. Constraining the NMSSM through GUT-scale boundary conditions only slightly affects this expectation. Our results complement earlier NMSSM studies of the galactic center excess, which link it to heavy Higgs searches at the LHC.
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Physical Review D, American Physical Society, 2016, 93, pp.015011. 〈10.1103/PhysRevD.93.015011〉
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Contributeur : Sabine Starita <>
Soumis le : vendredi 10 juillet 2015 - 15:25:44
Dernière modification le : jeudi 11 janvier 2018 - 06:14:21

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A. Butter, T. Plehn, M. Rauch, D. Zerwas, S. Henrot-Versillé, et al.. Linking the Galactic Center excess to invisible Higgs boson decays in the NMSSM. Physical Review D, American Physical Society, 2016, 93, pp.015011. 〈10.1103/PhysRevD.93.015011〉. 〈in2p3-01175488〉

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